Popular Shows by Mordechai Dinerman

1

The Hostage Dilemma: Part I

Nov 17, 2025

1:10:10

This class takes up one of the most challenging moral questions in Halachah: how far should we go to redeem captives? We’ll look at how this issue unfolded in Jewish communities around the world during the fifteenth and sixteenth centuries—what actually happened, and how the poskim grappled with the Mishnah’s rule against paying more than market value. In a future class, we’ll revisit this topic in the modern context of Israel and its ongoing struggle against terrorism. The Hostage Dilemma: Part I

2

Bidding Wars: Inside the History of Selling Shul Honors

Oct 24, 2025

1:15:29

In this class, we’ll trace how the sale of mitzvos in shul began, why it caught on, and how it spread across the Jewish world. We’ll look at halachic debates about selling on Shabbos and Yom Tov and at the fiery disputes that erupted over bidding rights, auction miscommunications, and the occasional auctioneer mischief. We’ll also hear from the voices who opposed the practice and what their protests reveal about their communities and times. Bidding Wars: Inside the History of Selling Shul Honors

3

The Hostage Dilemma: Part II

Nov 25, 2025

1:07:27

Today, we’re returning to the topic of hostages in Jewish history. Last time, we spent most of our attention on the exceptions to the rule. This time, we’re looking at cases where the Mishnah’s ban on overpaying played at least a partial role in shaping actual halachic decisions and communal policy. And yet, as we will see, the overarching conclusion that we reached in the prior class will hold: overpaying often occurred. And it’s all a step closer to discussing this dilemma in the contemporary context, which we will do in an upcoming class. The Hostage Dilemma: Part II

4

The Saga of Shul Shmoozing: A Historical Look at Talking in Shul Across the Centuries

Sep 11, 2025

1:00:31

Jews have been talking in shul for centuries, and rabbis and communities have tried countless ways to stop it. From twelfth-century Cairo to the Lower East Side in the early 1900s, this struggle has played out across Jewish communities worldwide. This class offers a light yet thoughtful examination of the history of “shul chatter” and how Jews have navigated it through the ages. The Saga of Shul Shmoozing: A Historical Look at Talking in Shul Across the Centuries

5

Josephus

Jan 9, 2025

1:05:23

The book known as Yosifun, cherished in traditional Jewish circles, and the books of Josephus, preserved in Greek and Latin by non-Jewish hands, spark challenging questions about authorship, reliability, and reconstructing the Jewish past. This class explores how rabbis throughout the ages evaluated these works, their role on the Jewish bookshelf, and how to navigate the apparent discrepancies between their accounts and the teachings of chazal. Josephus

6

We’ve Been Singing It All Wrong? Solving the V'chol Maaminim Mystery

Sep 19, 2025

1:07:49

Ever feel like some piyutim just don’t flow right, as if the stanzas are out of order? Join us for a historical detective journey as we trace the piyut V'chol Maaminim and explore its possible connection to the enigmatic poet Yannai, whose true genius was hidden for centuries. We’ll uncover forgotten clues from the Cairo Geniza and reveal the song’s original, elegant structure. Finally, we’ll explore how key ideas from Chasidus unlock profound messages within its stanzas—a perfect way to enter the new year. We’ve Been Singing It All Wrong? Solving the V'chol Maaminim Mystery

7

Predicting the Redemption: What About the Talmudic Prohibition?

Jul 12, 2022

1:00:58

The Talmud tells us to refrain from predicting when Moshiach will come, and Rambam affirms this ruling in his code of law. But Rambam himself, and so many other rabbinic sages, issued messianic predictions. Why? Predicting the Redemption: What About the Talmudic Prohibition?

8

Friday Night Kiddush Between 6 and 7

Nov 9, 2022

56:56

This class traces the minhag of avoiding the recitation of the Friday night kiddush during the seventh hour after midday. When and why did this custom begin? Friday Night Kiddush Between 6 and 7

9

Rashba’s Rebuttal: Defending Judaism in Medieval Barcelona

May 3, 2023

1:04:40

Rabbi Shlomo ben Aderes (Rashba) took a maximalist position about the eternality of mitzvos, arguing that none of them could ever be suspended, not even in the era of techiyas hameism. But a faction of his rabbinic peers dissented. In this class, we examine the primary sources that are central to this discourse and also analyze the underlying dynamics—namely, the attempt at the time of Christian missionaries to undermine Judaism. This exploration will show how the greatest rabbinic minds responded to this threat and grappled with the more controversial passages of the Talmud and Midrash. Rashba’s Rebuttal: Defending Judaism in Medieval Barcelona

10

In the Wake of Shabtai Tzvi’s Betrayal

Jun 7, 2023

1:04:34

In the summer of 1666, Shabtai Tzvi’s conversion to Islam shattered hopes and dreams, leaving Jewish communities grappling with the aftermath of a false redeemer. One contentious issue arose in Amsterdam, where leaders debated whether to continue the performance of Birchas Kohanim each Shabbos, initiated during Shabtai’s self-proclaimed messianic era. Rabbi Yaakov Sasportas penned a series of halachic responsa on this matter, tackling the challenge of ideas proposed by flawed individuals and customs initiated by misguided beliefs. In the Wake of Shabtai Tzvi’s Betrayal

11

The Heartless Chicken

Oct 18, 2023

1:01:30

We examine the tale of the heartless chicken that ignited lively discussion among rabbinic authorities in the year 1709. We introduce the pivotal figures in this intriguing narrative, examine the framing of the question, analyze the diverse range of answers proposed, and learn about the captivating research endeavors undertaken by these rabbis in their quest for a definitive solution. This engaging study about the interplay between science and tradition offers unique insights into the intellectual landscape of the time. The Heartless Chicken

12

The Rebbe Rashab, Zionism, and Expediting the End

Aug 10, 2022

1:02:18

The Rebbe Rashab invoked “dechikas haketz” as one reason to be against Zionism. What are the contours of this prohibition? Does it still apply? The Rebbe Rashab, Zionism, and Expediting the End

13

Rabbinic Police Powers, Love and Hate, and Stern Censorship: Insights from Newly Discovered Passages of the Alter Rebbe’s Shulchan Aruch

Mar 9, 2022

56:02

The Czarist regime forbade rabbinical courts from employing coercive measures and adopted policies to promote assimilation. This led to the censoring of Jewish texts, and a recent discovery has shown that this also affected the Alter Rebbe’s Shulchan Aruch. Rabbinic Police Powers, Love and Hate, and Stern Censorship: Insights from Newly Discovered Passages of the Alter Rebbe’s Shulchan Aruch

14

A Jewish Guide to Horoscopes and Astrology (Part 1)

May 1, 2022

58:21

Continuing our series of classes on Judaism and the paranormal, this class begins a three-part deep dive into the topic of astrology. As with all of these mysterious topics, two divergent pathways emerge. A Jewish Guide to Horoscopes and Astrology (Part 1)

15

The Day After: Reacting to Moshiach’s Not Coming in Chabad History

Jul 20, 2022

59:34

How have Jewish sages responded when a predicted Messianic time didn’t materialize? Here we focus on this phenomenon within Chabad history. The Day After: Reacting to Moshiach’s Not Coming in Chabad History

16

Is It Kosher To Elope? Marriage Without Parental Consent

Nov 16, 2022

58:46

Does the mitzvah of honoring parents imply that parents wield halachic control over their children’s marriage? Intriguingly, this question became a factor in the tensions that arose with the advent of the Chasidic movement in the eighteenth century. Is It Kosher To Elope? Marriage Without Parental Consent

17

The Controversial Haskamah

Jul 19, 2023

1:06:44

Starting in the 1870s, a visionary Jerusalem rabbi was consumed by the idea of resurrecting the ancient mitzvah of guarding the site of the Beis Hamikdash. But his fervor was met with indifference and opposition from others, sparking a halachic debate of significant proportions. As the narrative unfolds, unexpected connections emerge, revealing the curious involvement of the Chabad rebbes in this intriguing tale. The Controversial Haskamah

18

Rambam’s Menorah: Insights from Ancient Hebrew Manuscripts

Jul 26, 2023

1:08:55

We are all acquainted with the renowned depiction of the menorah created by the Rambam. In this class, we dig into the story of this image. Where did it come from? Can we trust its accuracy? When was it discovered? Did later artists and copyists treat it as just a doodle or something more meaningful? Rambam’s Menorah: Insights from Ancient Hebrew Manuscripts

19

The Warder Cresson Story

Nov 8, 2024

1:08:33

In 1848, a man in Jerusalem on a journey to Judaism was devastated when told he must desecrate Shabbos because, despite undergoing a bris, he wasn’t yet considered Jewish until completing the final step of immersion. His heartbreak ignited a halachic controversy, which we’ll explore in this class. We’ll uncover the identities of the key figures involved and delve into the moving story of a man willing to sacrifice everything for his newfound faith. The Warder Cresson Story

20

The Halachic Status of Christianity: Insights from Newly Discovered Passages of the Alter Rebbe’s Shulchan Aruch

Mar 9, 2022

1:02:44

For centuries, Halachic authorities have debated how to designate Christian theological beliefs. In recent weeks, a new manuscript of the Alter Rebbe’s Shulchan Aruch has surfaced, providing us with an important new voice in this conversation. The Halachic Status of Christianity: Insights from Newly Discovered Passages of the Alter Rebbe’s Shulchan Aruch

21

Purim Class - The Manos Halevi by Rabbi Shlomo Alkabetz: Overview and Highlights

Mar 13, 2022

57:45

One of the most important commentaries on Megilas Esther was authored by Rabbi Shlomo Halevi Alkabetz (d. 1576), the famed author of Lecha Dodi. We explore eight memorable teachings from Manos Halevi and examine how they are cited and explained in Chabad sources. Purim Class - The Manos Halevi by Rabbi Shlomo Alkabetz: Overview and Highlights

22

The Dead Sea Scrolls (Part 2): An Alternative Jewish Calendar

Jul 3, 2022

55:49

The Dead Sea Scrolls present a sectarian system for measuring time and celebrating the festivals, and it may help us understand an enigmatic line in our Mishnah. The Dead Sea Scrolls (Part 2): An Alternative Jewish Calendar

23

Paris 1240: Disputation and Devastation

Jul 6, 2022

1:04:02

Rabbi Yechiel of Paris was forced to defend the Gemara before a Christian tribunal. Despite his courageous efforts, the Talmud was condemned to the flames. Paris 1240: Disputation and Devastation

24

The Dead Sea Scrolls (Part 3): The Philosophical Dispute

Jul 10, 2022

1:02:26

The abundance of name calling in some of the Dead Sea Scrolls exposes diverging worldviews about how halachic interpretation should operate. The Dead Sea Scrolls (Part 3): The Philosophical Dispute

25

Does Israel Amount to (the Beginnings of) Kibutz Goliyos?

Jul 24, 2022

1:07:27

The Rebbe Rashab addressed this issue when confronted with Zionism, and the Rebbe did the same a few decades later after the State of Israel was established. Does Israel Amount to (the Beginnings of) Kibutz Goliyos?

26

The Mekashya Mystery

Jul 27, 2022

1:01:17

Tunisian Jews used to refer to Tanach as Mekashya, but few understood why. Fortunately, illuminated medieval Jewish manuscripts can help solve this mystery, revealing a unique perspective on the study of Tanach. The Mekashya Mystery

27

The Barcelona Disputation: Was Moshiach Born on Tisha B’Av?

Aug 3, 2022

1:06:41

At two medieval disputations, a famous Midrash was invoked to argue that Moshiach had already come. The rabbinic approaches to this Midrash unveil different approaches to Talmudic Aggadah. The Barcelona Disputation: Was Moshiach Born on Tisha B’Av?

28

The Cracow Couple and Rama's Remarkable Responsum

Aug 31, 2022

1:03:29

A controversial wedding ceremony ca. 1550 sheds important light on the inner rabbinic process, the history of Jewish marriage, and the limits of rabbinic law. The Cracow Couple and Rama's Remarkable Responsum

29

Buried Alive: The 18th-Century Halachic Debate

Sep 7, 2022

1:03:12

In 1772, the Duke of Mecklenburg decreed that Jews could not bury their dead until three days after death. The Jewish community faced difficult questions about the mitzvah of burial. Buried Alive: The 18th-Century Halachic Debate

30

The Battle Over Machnisei Rachamim (Part 1)

Sep 14, 2022

52:59

It’s a beloved piece of liturgy, recited as we begin the new year. But some of the greatest halachic figures waged war against it, suggesting that it expresses quasi-heretical beliefs. In Part 1 we hear the voices of the opponents, and Part 2 will examine the defense. The Battle Over Machnisei Rachamim (Part 1)

31

After A Decade of Barrenness: What Actually Happens

Nov 2, 2022

1:04:38

The Talmud famously rules that a childless couple must divorce after ten years of infertility. Yet, this law has often been overlooked, a reality that goes back many centuries. This class explores how, when, and why this occurred. After A Decade of Barrenness: What Actually Happens

32

When A London Rabbi Was Accused of Heresy

Dec 16, 2022

57:11

In November 1703, Rabbi David Nieto delivered a controversial sermon at the Bevis Marks Synagogue in London, causing a rift in the local Jewish community. The cause of the feud may have been mundane politics, but it forced a thought-provoking rabbinic responsum about nature, G-d, deism, and pantheism. When A London Rabbi Was Accused of Heresy

33

Evolution of the Tanya: Timely Lessons from the Eighteenth-Century Battle against Chasidism

Jan 4, 2023

1:03:58

The pre-print manuscripts of Tanya shed light on what the Alter Rebbe added to this seminal text at a later stage. Curiously, three of the most notable updates involve interpersonal relationships. This lecture was recorded live by Jewish Multimedia Library, a.k.a. JML, Melbourne Australia. Many additional recordings are available from their website: www.jml.org.au. Evolution of the Tanya: Timely Lessons from the Eighteenth-Century Battle against Chasidism

34

The Nile on Trial: 16th-Century Rabbis and Aquatic Science

Jan 12, 2023

1:00:30

In 1549, the rabbinical court in Cairo held hearings and engaged in extensive research to learn about the source of the annual flooding of the Nile. The rabbis of the day found themselves on different sides of this scientific question and vehemently defended their respective positions. But why did they care? The Nile on Trial: 16th-Century Rabbis and Aquatic Science

35

Censoring Rambam’s Mishneh Torah in Czarist Russia

Apr 26, 2023

1:01:21

In 1850, an unusual edition of Rambam’s Mishneh Torah was published in czarist Russia. A perusal of this work reveals that it was censored in a peculiar and unprecedented fashion. But what lies behind this story of suppression? Who was responsible for this censorship? And what does it reveal about the tensions in Jewish life at that time? Through a nuanced analysis of the key players and their motivations, we gain a deeper understanding of the internal and external challenges faced by the Jewish community in Czarist Russia in the mid-19th century. Censoring Rambam’s Mishneh Torah in Czarist Russia

36

Women and the Study of Talmud

May 31, 2023

1:10:49

Over the past century, significant changes have occurred in the area of women’s Torah education, but a vibrant and ongoing debate about this subject persists. By exploring the treatment of this matter in the Talmudic sources and throughout Jewish history, we aim to gain a deeper understanding of the current landscape, the factors that have shaped it, and the pathways that lie ahead. Women and the Study of Talmud

37

Techeles: A Tangled Tale

Jul 5, 2023

1:05:01

During the late 1880s, an audacious endeavor was set forth by the Radziner Rebbe, aimed at renewing the ancient legacy of techeles through his arduous quest to rediscover the elusive chilazon. However, amidst his fervor, a tide of opposition emerged. In this class, our attention turns to the objections raised by the Rebbe Rashab, carefully outlined in a letter authored in 1907, after having perused the works of the Radziner Rebbe. Techeles: A Tangled Tale

38

The History and Evolution of the Chabad Machzor

Sep 13, 2023

1:26:32

What is the story behind the Chabad Machzor? In the first part of this class, we find ourselves comparing two sacred machzorim. The current Chabad Machzor is open before us, focusing on the Shachris of Rosh Hashanah. Concurrently, we have images of an Ashkenazi machzor dating back to the 1200s. Our purpose is to discern the commonalities and distinctions between the two. We then attempt to learn about how the Chabad machzor developed. We show that during the nineteenth century, there were diverse perspectives within the Chabad community concerning the role of the piyyutim. Ultimately, the transformative moment in this story is the official publication of the Lubavitch Machzor in 1941. To see the images of the medieval machzor, click here: https://digital.bodleian.ox.ac.uk/objects/268d1688-4523-4aed-962a-75f24c8cbfd0/surfaces/f381f605-74ae-4eea-8383-948ab02ff422/ To see the first print of the Alter Rebbe's siddur, click here: https://viewer.rsl.ru/ru/rsl01006554275?page=1&rotate=0&theme=white The History and Evolution of the Chabad Machzor

39

The History of Kol Nidrei

Sep 20, 2023

1:09:39

Kol Nidrei has been associated with controversy since its inception, and we’re here to delve deep into its intriguing story. We’ll unravel the criticisms it faced, the defenses it inspired, and the persistent misconceptions that have colored its long history. But that’s not all. We’ll also embark on a journey to trace the theory that links Kol Nidrei to the Marranos. The History of Kol Nidrei

40

The Puzzle of Peshat: Rashbam’s Controversial Commentary

Oct 11, 2023

57:37

In 1158, Rabbi Avraham ibn Ezra found himself disturbed by a provocative dream, which ultimately inspired him to author a treatise concerning the proper start time of the halachic day—evening. One possibility is that this work was a polemical discourse aimed at Rashbam’s Torah commentary. This prompts us to delve into the story of this commentary, examining some of the controversial passages that have sparked confusion throughout the ages. Ultimately, we emerge from this exploration with an empowering revelation: the fact that the halachic day commences at nightfall teaches us about becoming resilient in times of crisis. The Puzzle of Peshat: Rashbam’s Controversial Commentary

41

The Printers’ Clash: The Battle Over Rambam’s Mishneh Torah, Venice 1550

Apr 8, 2024

1:06:26

In the year 1550, two non-Jewish printers published competing editions of Rambam’s Mishneh Torah. One of them partnered with an esteemed rabbi from Padua, who, in his quest for support, turned to Rabbi Moshe Isserlis. Rama’s response along with a careful examination of the printed volumes unveil the details of this dispute. Rama’s scholarly answer also sheds light on various areas of commercial Halachah as well as the Noahide laws. The Printers’ Clash: The Battle Over Rambam’s Mishneh Torah, Venice 1550

42

The Kittsee Haggadah

Apr 10, 2024

58:24

The library of Agudas Chasidei Chabad houses a remarkable manuscript crafted in 1760 by the talented scribe and artist Chaim ben Asher Anshel of Kittsee, near present-day Bratislava. We’ll trace the journey of this Haggadah from its creation to its acquisition by the Frierdiker Rebbe. Opening this manuscript, we’ll examine its layout, artwork, nusach, and style of nikud, seeking to uncover the influences that shaped Chaim ben Asher’s masterpiece through a comparative analysis with other Haggadahs of that period. To purchase a facsimile of the Kittzee Haggadah: https://store.kehotonline.com/prodinfo.asp?number=HP-HAGG.KITZEE To view it online, visit the following link and insert card number “1950”: https://chabadlibrary.org/catalog/index.php?catalog=mscatalog Additional Links: Kittzee Haggadah 1748, Gross Collection https://www.nli.org.il/en/discover/manuscripts/hebrew-manuscripts/viewerpage?vid=MANUSCRIPTS#d=[[PNX MANUSCRIPTS990000632400205171-1,FL54685621 Kittzee Haggadah 1768, Hebrew Union College https://mss.huc.edu/phpviewer/index.php?path=MS 451 Kittzee Haggadah 1769, Jewish Museum London https://www.nli.org.il/en/discover/manuscripts/hebrew-manuscripts/viewerpage?vid=MANUSCRIPTS#d=[[PNX MANUSCRIPTS990001792760205171-1,FL28179029 Kittzee Haggadah 1771, Hungarian Academy of Sciences https://www.nli.org.il/en/discover/manuscripts/hebrew-manuscripts/viewerpage?vid=MANUSCRIPTS#d=[[PNX MANUSCRIPTS990001920270205171-1,FL59161404 Kittzee Haggadah 1772, JTS Library https://digitalcollections.jtsa.edu/islandora/object/jts%3A62343#page/41/mode/1up Amsterdam 1695 https://www.nli.org.il/en/books/NNL ALEPH990013798840205171/NLI#modal-downloadModal Prague 1713 https://www.nli.org.il/en/books/NNL ALEPH990013798850205171/NLI Offenbach 1721 https://www.hebrewbooks.org/4923 Frankfurt 1724 https://www.nli.org.il/en/books/NNL ALEPH990010665310205171/NLI

43

The Frankist Blood Libel

May 8, 2024

1:04:03

In 1759, a clandestine faction of Shabetai Tzvi’s followers in Poland committed a startling act: they collectively converted to Christianity while simultaneously accusing Jews of the age-old fabrication of using blood in matzah production. Despite the longstanding existence of the blood libel, this marked the first instance where the accusation was made by citing and distorting Talmudic and halachic sources. In this class, we examine the specific passages they employed and learn the response of the Jewish leadership during that era. As Ber of Bolochov, the chronicler of this event, emphasized, recording this narrative was essential to ensure that future generations would understand the suffering and trials of their ancestors and how it was notably worse when it emanated from within the Jewish community. The Frankist Blood Libel

44

The Masada Martyrs: Halachic Perspectives on History’s Hardest Choices

May 22, 2024

1:12:11

How does a halachic mind interpret the harrowing events at Masada, where Jewish rebels chose death at their own hands over surrender? In this class, we delve into this question, exploring not only the tragic case at Masada but also similar ethical dilemmas faced by Jews during the Middle Ages when confronted with forced conversions under Christian rule. The complexities of these historic moments offer deep insights into the moral and spiritual struggles that have shaped Jewish resilience and identity. The Masada Martyrs: Halachic Perspectives on History’s Hardest Choices

45

The Provocative Portrait: Unveiling the True Face of Moshe Rabbeinu

Jun 18, 2024

1:12:19

Rabbi Yisrael Lifshitz, a well-known commentator on the Mishnah, included a provocative legend about Moshe Rabbeinu in his writings, suggesting that Moshe naturally possessed negative character traits. Over the following decades, some rabbis strongly opposed this legend, arguing that its claims were baseless and defamed Moshe’s revered image. In this class, we’ll talk about the origins of this controversial story, look at both sides of the debate, and explore why this account struck a chord with many Chasidic authors. The Provocative Portrait: Unveiling the True Face of Moshe Rabbeinu

46

Fowl Play: The Great Turkey-Chicken Debate of the 19th Century

Sep 4, 2024

1:07:25

In the 1860s, European Jewish communities faced a unique halachic challenge: the arrival of new chicken breeds from distant lands. As these exotic fowl entered the marketplace, rabbis debated their kosher status, igniting an adjacent discussion on how and why the turkey became accepted as kosher. Fowl Play: The Great Turkey-Chicken Debate of the 19th Century

47

Art of the Blast: Shofar Blowing Customs in Medieval Manuscripts

Sep 11, 2024

1:07:10

In this episode, we’re diving into fascinating early 16th-century woodcut images and priceless medieval machzor manuscripts to see how they portray the mitzvah of blowing the shofar. We’ll explore the unique details in these images that reveal interesting minhagim of the time, though some might leave us with more questions than answers. Let’s uncover the stories these images tell about our tradition. Links: Book on Jewish Confession (Nuremberg 1508) https://sammlungen.ub.uni-frankfurt.de/freimann/content/thumbview/6515799 Der Juden Spiegel (Cologne 1508) https://gallica.bnf.fr/ark:/12148/bpt6k1911061m/f39.double Luzzato Machzor https://www.sothebys.com/en/articles/the-luzzatto-high-holiday-mahzor-1 Machzor – Bavarian State Library https://www.digitale-sammlungen.de/en/view/bsb00034975?page=82 Kaufmann Machzor - Hungarian Academy of Sciences http://kaufmann.mtak.hu/en/ms388/ms388-012v.htm Machzor – Cambridge University Library https://cudl.lib.cam.ac.uk/view/MS-ADD-00662/127 Machzor – Austrian National Library https://www.nli.org.il/en/discover/manuscripts/hebrew-manuscripts/viewerpage?vid=MANUSCRIPTS#d=[[PNX MANUSCRIPTS990001692630205171-1,FL21854414]] Art of the Blast: Shofar Blowing Customs in Medieval Manuscripts

48

Lost in the Geniza: An Anonymous Teshuvah on the Two-Day Yom Tov Debate

Sep 28, 2024

1:07:26

From the Cairo Geniza, we uncover an ancient Judeo-Arabic rabbinic essay offering unique insights into the history and development of the Jewish calendar, particularly the observance of the second day of yom tov outside the Land of Israel. As we delve deeper, this document emerges as part of a broader debate, addressing the Karaites’ opposition to the two-day yom tov tradition. By comparing this text with Rambam’s perspective, we’ll gain a deeper understanding of this critical issue and a window into a pivotal moment in Jewish history. Lost in the Geniza: An Anonymous Teshuvah on the Two-Day Yom Tov Debate

49

Rooted in Tradition: The Calabria Esrog Story

Oct 10, 2024

1:18:14

Why has the Chabad community favored esrogim from Calabria? In this class, we’ll explore the backstory, diving into the halachic debates about grafted esrogim and why they matter. We’ll also take a closer look at the big discovery in 1955—when it turned out that even Calabria esrogim weren’t completely immune to grafting—and what that meant moving forward. We’ll unpack the history and the questions that still linger today. Rooted in Tradition: The Calabria Esrog Story

50

The Rebbe’s Rashi: Insights from Manuscripts and Incunabula Editions

Nov 1, 2024

1:01:51

As we mark the 60th anniversary of the Lubavitcher Rebbe’s sichos on Rashi, we will dive into how the Rebbe engaged with some of the earliest print editions and medieval manuscripts of Rashi’s commentary. These unique editions often reveal variant readings of Rashi’s words, each with its own story to tell. Through this journey, we’ll gain a deeper appreciation for Rashi’s foundational commentary—and the Rebbe’s unique approach to understanding it. Links to the relevant manuscripts and prints: Vatican Library, Urb. Ebr. 8 https://digi.vatlib.it/view/MSS Urb.ebr.8 Vatican Library, Vat. Ebr. 47 https://digi.vatlib.it/view/MSS Vat.ebr.47 Reggio de Calabria 1475 https://www.internetculturale.it/it/16/search/detail?id=oai%3Awww.internetculturale.sbn.it%2FTeca%3A20%3ANT0000%3APARE078580 Guadalajara 1476 https://www.hebrewbooks.org/21188 Rome, circa 1470 https://www.internetculturale.it/it/16/search/detail?instance=&case=&id=oai%3Awww.internetculturale.sbn.it%2FTeca%3A20%3ANT0000%3APARE078579 2&qt= Berliner edition https://www.nli.org.il/en/books/NNL ALEPH990020823920205171/NLI The Rebbe’s Rashi: Insights from Manuscripts and Incunabula Editions

51

The Climate Clash: Rain, Rabbis, and Rulings for the Southern Hemisphere

Nov 22, 2024

1:04:27

In the 1630s, pioneering Jewish immigrants in Brazil asked when they should daven for rain, given that their seasons were reversed from those in Europe. Their question sparked a fascinating rabbinic debate that takes us back to a dramatic showdown in 14th-century Toledo, which continues to resonate today. Join us as we explore how Halachah navigates the balance between tradition and reality. The Climate Clash: Rain, Rabbis, and Rulings for the Southern Hemisphere

52

Benches, Bargains, and Bickering: Shul Seating in the Middle Ages

Nov 29, 2024

1:01:54

We kick things off with seven fascinating stories from the teshuvos of medieval Spain, where we discover shul seats being treated like real estate: bought, sold, inherited, mortgaged—and sometimes the center of heated disputes. Then, we shift our focus to Ashkenaz, where this phenomenon is noticeably absent, suggesting a very different set of attitudes and conventions about shul seats. Finally, we dive into how the poskim tackled some of these disputes, applying Halachah to their contemporary realities. Benches, Bargains, and Bickering: Shul Seating in the Middle Ages

53

Lost Lights of Chanukah: Exploring the Books of Maccabees

Jan 2, 2025

1:00:42

The Books of Maccabees tell the dramatic story of the Chanukah revolt and the heroism of the Jewish fighters. But who wrote these books, and why were they left off the Jewish bookshelf? We’ll discuss the history of these texts, explore their reception among Jews throughout the ages, and probe the role they played—or didn’t play—in shaping Jewish memory of the Chanukah story. Lost Lights of Chanukah: Exploring the Books of Maccabees

54

Rambam to the Rescue: His Legendary Letter to Yemen

Feb 28, 2025

1:03:31

In the 1170s, the Jewish community in Yemen faced an existential crisis: a radical ruler forced them to convert to Islam, an apostate Jew spread anti-Jewish propaganda, and a self-declared Messiah sowed confusion. In response, the Rambam penned one of his most powerful letters, offering guidance and encouragement. As we approach the 44th Siyum HaRambam, we revisit this extraordinary letter, its historical context, and its enduring lessons. Rambam to the Rescue: His Legendary Letter to Yemen

55

The Machine Matzah Controversy

Apr 2, 2025

1:19:21

In the 1850s, a groundbreaking innovation was introduced in Galicia: machines to facilitate matzah production. What followed was a fierce and dramatic conflict that shook the Jewish world. Pamphlets were published on both sides, each defending its position with vigor, leading to intense debates over halachah, minhag, and economic policy. In this class, we jump into the heart of the controversy as it played out in the late 1850s—the first phase of this conflict—and then explore how later Chabad sources engaged with this issue. The Machine Matzah Controversy

56

The Doctored Talmud: Prague, 1728

May 6, 2025

1:21:15

There’s a long and painful history of the Gemara being censored in Christian lands, but in 1728, a draconian form of censorship led to the publication of a heavily redacted Maseches Berachos. A fierce debate erupted within the Jewish community: was it better to print a mutilated Gemara, or not to print it at all? In this class, we explore the rabbinic voices on both sides, the arguments they advanced, and actual examples of the edits. It’s a compelling glimpse into a community grappling with impossible choices under the weight of galus. Link to this 1728 edition: https://books.google.com/books?id=IW9iAAAAcAAJ&printsec=frontcover&source=gbs ge summary r&cad=0#v=onepage&q&f=true The Doctored Talmud: Prague, 1728

57

The Dilemma of Handing Over One to Save Many

Jun 20, 2025

1:09:12

Can a Jewish community surrender one of its own to save the many? This class explores three cases from the 1600s and 1700s, where this wrenching question was brought before leading rabbanim. We’ll learn about the details of each case, the rulings the rabbis issued, and the Talmudic sources that shaped their decisions. The Dilemma of Handing Over One to Save Many

58

Purim Through the Lens of Historic Jewish Art

Mar 16, 2022

1:11:13

The Jews throughout the ages who employed art to depict the Purim story left us a legacy rife with messaging. Synagogue walls, biblical manuscripts, and medieval machzorim can teach us a lot about what Purim used to mean and what it can still mean today. Purim Through the Lens of Historic Jewish Art

59

Kosher Pig? Analyzing a Mysterious Midrash (Part 1)

Mar 20, 2022

59:47

There’s a well-known tradition that it will be permissible for Jews to consume the meat of a pig when Moshiach comes. What is the source for this teaching and what is its logic? Can there ever be a time when mitzvos are suspended? There are multiple approaches to these questions. Kosher Pig? Analyzing a Mysterious Midrash (Part 1)

60

The Letter and Spirit of the Law vis-a-vis Imitation Products

Mar 23, 2022

57:40

Is it appropriate for a Jew to eat kosher imitation bacon, crab, or shrimp? Is this undermining the spirit of Kashrus? Central to the contemporary discussion is a fascinating Talmudic passage about a conversation between Yalta and Rav Nachman, which deserves analysis and exploration. The Letter and Spirit of the Law vis-a-vis Imitation Products

61

Kosher Pig? Analyzing a Mysterious Midrash (Part 2)

Mar 27, 2022

50:59

Continuing to explore whether there can ever be a time when mitzvos are suspended, and how this relates to the mysterious teaching that the pig will one day become kosher. Kosher Pig? Analyzing a Mysterious Midrash (Part 2)

62

Evolution of the Haggadah: A Pictorial History, from the Cairo Genizah, to the Medieval Art Workshop, to the Modern Printing Press

Mar 30, 2022

1:01:09

The Story of the Haggadah is synonymous with the story of the Jewish people. Observe how this most famous Jewish liturgical work has evolved in its appearance from one generation to the next. Yes, things do change, but they also stay the same. Evolution of the Haggadah: A Pictorial History, from the Cairo Genizah, to the Medieval Art Workshop, to the Modern Printing Press

63

Finders Keepers? Halachic Implications From Tzaraas In the Home

Apr 3, 2022

56:38

Every so often we hear of someone who is blessed with a true windfall. In such instances, we often find multiple parties claiming a stake in the bonanza. How do we determine ownership when there are conflicting claims to life’s valued surprises? Finders Keepers? Halachic Implications From Tzaraas In the Home

64

The Old, the New, the Forgotten: Halachah and Minhag In Haggadah Art

Apr 6, 2022

58:47

Medieval illuminated Haggadahs shed light on how the observance of the past was both similar to and different from the present. Taking this journey is an excellent way to review some of the laws and customs of Pesach. The Old, the New, the Forgotten: Halachah and Minhag In Haggadah Art

65

The Blood Libel and Talmudic Censorship

Apr 10, 2022

58:30

Since ancient times, Jews have been falsely accused of killing non-Jews for ritual purposes. In medieval Europe, beginning in the twelfth century, this was often accompanied by accusations that Jews used their victims’ blood to bake matzah for the Jewish holiday of Passover. This ridiculous but deadly lie would eventually lead to subtle Talmudic Censorship. The Blood Libel and Talmudic Censorship

66

Dominating Wives, Suffering, and Reincarnation: The Debate About Gilgul and It’s Connection to Pesach

Apr 13, 2022

1:00:01

While the kabbalists embraced the concept of reincarnation, other rabbis were skeptical. What lies at the root of this dispute? And how did the kabbalists address the various challenges raised about this doctrine? Dominating Wives, Suffering, and Reincarnation: The Debate About Gilgul and It’s Connection to Pesach

67

Blatant Disregard of a Torah Law? On the Prohibition Against Settling in Egypt

Apr 18, 2022

1:01:32

Some of the greatest Torah sages lived in Egypt even as the Talmud ruled that this was forbidden. Over the years, numerous justifications have been provided. Which will resonate with you? Blatant Disregard of a Torah Law? On the Prohibition Against Settling in Egypt

68

A Jewish Guide to Demons and Spirits

Apr 27, 2022

59:35

Do demons exist? Did they ever exist? Is adultery with a demon considered adultery? (Yes, poskim addressed that question.) Jewish sources are not of one voice on this topic. A Jewish Guide to Demons and Spirits

69

A Jewish Guide to the Evil Eye

May 4, 2022

1:06:07

The background and origins of red strings, kinora, and “poo-poo”; Rambam’s position on the matter; and two models for how Jews understood this mysterious phenomenon. A Jewish Guide to the Evil Eye

70

A Jewish Guide to Horoscopes and Astrology (Part 2)

May 8, 2022

42:09

Continuing to explore astrology from a Jewish perspective. What are the theological problems with accepting astrology and how did the rabbis address this? We will discover a range of opinions about how easy or difficult it is to subvert an astrological outcome. A Jewish Guide to Horoscopes and Astrology (Part 2)

71

Overturning Roe v. Wade: Good for the Jews?

May 11, 2022

1:14:57

A leaked draft suggests that the highest court of the land is primed to overturn one of the most controversial cases in American history. It’s time to revisit what Halachah has to say on the topic of abortion and the beginning of life. Overturning Roe v. Wade: Good for the Jews?

72

A Jewish Guide to Horoscopes and Astrology (Part 3)

May 15, 2022

59:06

The final class of the series, in which we introduce Rambam’s position, Chasidic sources, and wrap up the topic with the key takeaways. A Jewish Guide to Horoscopes and Astrology (Part 3)

73

The Cairo Genizah: Shedding Light on the Life and Works of the Rambam

May 18, 2022

56:21

The Cairo Geniza unveils much about Rambam’s communal activism, teaching, authorship, lost works, and overall life. The Cairo Genizah: Shedding Light on the Life and Works of the Rambam

74

Mishneh Torah: A Biography

May 22, 2022

1:09:19

We can document how the Mishneh Torah was drafted, finalized, updated, disseminated, illuminated, critiqued, printed, and censored. Mishneh Torah: A Biography

75

Explaining the Holocaust? Multiple Approaches by the Frierdiker Rebbe and Rebbe

May 25, 2022

1:06:31

Many assume that "explaining" and "Holocaust" are never to be seen in the same sentence. How did we get here? And was it always this way? Explaining the Holocaust? Multiple Approaches by the Frierdiker Rebbe and Rebbe

76

Shavuos Through the Lens of Historic Jewish Art

May 29, 2022

1:08:25

Why animal heads replace human heads; why the luchos morph into a Torah scroll; and the origins of the areinfirenish and dairy on Shavuos. Shavuos Through the Lens of Historic Jewish Art

77

Shavuos Art, and the Strange History of Akdamus

Jun 1, 2022

1:14:47

By examining the liturgy and art in a tiny medieval machzor, we learn how hearing the Aseres Hadibros was experienced seven hundred years ago, and how it's both similar and different today. Shavuos Art, and the Strange History of Akdamus

78

Spelling Hashem’s Name in Hebrew Manuscripts

Jun 8, 2022

1:02:52

We are used to seeing two Yudin as a substitute for G-d’s ineffable name. But it wasn’t always that way. Spelling Hashem’s Name in Hebrew Manuscripts

79

The Rebbe’s Reshimas Hamenorah: An Overview

Jun 12, 2022

1:00:04

Rabbi Elazar and Rabbi Yehudah (Rebbi) debated how the furniture in the Beis Hamikdash was situated, and this reflected their philosophies about life. The Rebbe’s Reshimas Hamenorah: An Overview

80

Remembering and Forgetting: The History of Chof Sivan

Jun 15, 2022

1:00:01

This day has a sad history of persecution, but also an interesting tendency to be taken seriously at first, only to peter out after some time. Remembering and Forgetting: The History of Chof Sivan

81

The Curious Case of the Desert Dead

Jun 19, 2022

57:43

The Talmud famously recounts how one of its sages discovered the “dead of the desert.” Drawing on a range of sources, the Rebbe explained this Talmudic tale with symbolic depth and personal relevance. The Curious Case of the Desert Dead

82

The Scandal of the Missing Line: Allegations of Textual Corruption against Chabad

Jun 22, 2022

1:05:36

The Tzemach Tzedek wrote about the proper brachah to make on a talis katan, but some have alleged that we tampered with his text. The Scandal of the Missing Line: Allegations of Textual Corruption against Chabad

83

Who Wrote the Dead Sea Scrolls? A Talmudic Approach

Jun 26, 2022

56:36

The first of a three-part series analyzing how the Dead Sea Scrolls can deepen our understanding of the Mishnah and Talmud. Who Wrote the Dead Sea Scrolls? A Talmudic Approach

84

Gun Control: Talmudic Perspectives

Jun 29, 2022

1:01:54

The Supreme Court recently issued a landmark decision regarding the “right to bear arms.” What does Halachah offer on this topic? Gun Control: Talmudic Perspectives

85

The Battle Over Machnisei Rachamim (Part 2)

Sep 21, 2022

55:28

In the previous episode, we witnessed some of the greatest halachic figures waging war against Machnisei Rachamim and a number of other piyutim. In Part 2, we hear the voices of the supporters. The Battle Over Machnisei Rachamim (Part 2)

86

Liturgical Warfare Among 16th-Century Italian Jews

Nov 23, 2022

1:02:38

As Italian Jews immigrated to the Ottoman Empire during the sixteenth century, many wanted to switch to the Sephardic liturgical style. The question then was whether it was permitted to abandon well-entrenched communal customs—a question that’s very much relevant today. Liturgical Warfare Among 16th-Century Italian Jews

87

The Meaning of Dreaming: Talmudic Perspectives

Nov 30, 2022

1:02:24

Are our dreams significant? Do they have predictive value? Should we pay heed to their warnings? The Talmud seems to offer contradictory teachings on this subject, and this will lead us toward two classic approaches to this matter. The Meaning of Dreaming: Talmudic Perspectives

88

Between Ashkenaz and Sefard: Medieval Women, Biblical Dena, and the Public Square

Dec 7, 2022

56:37

We can learn about the public presence of women in a given society by examining how various rabbis understood the story of Dina. We’ll witness the difference between Ashkenazic and Sefardic commentaries, between the Tanchuma and Bereishis Rabah, and between Ashkenazic and Sefardic halachic norms. Between Ashkenaz and Sefard: Medieval Women, Biblical Dena, and the Public Square

89

Burning of the Books: The Alter Rebbe, the Gra, and the Tzimtzum Tussle

Jan 18, 2023

1:10:01

In 1796, a work of the Baal Shem Tov’s teachings was consigned to the flames. What were the specific passages in this book that some deemed objectionable? This will help us uncover the most fundamental theological difference between Chasidim and non-Chasidim at the turn of the nineteenth century. Burning of the Books: The Alter Rebbe, the Gra, and the Tzimtzum Tussle

90

Loathing Our Clothing: The Despot’s Decree and Rabbinic Response

Jan 25, 2023

1:04:41

In 1844, the Czar of Russia issued a ban on traditional Jewish clothing worn by Eastern European Jews for centuries, leaving the community with a dilemma: should they adhere to their cultural customs, or comply with the government’s decree? Loathing Our Clothing: The Despot’s Decree and Rabbinic Response

91

Secrets of a Chozer: An Interview with Rabbi Simon Jacobson

Jan 30, 2023

2:36:02

(0:38) – General Introduction (3:08) – Rabbi Jacobson’s introduction about תורת חב"ד (7:36) – Introduction about himself (18:41) – How he got started in חזרה (21:31) – Getting more involved in תשל"ח as Reb Yoiel’s sidekick (25:34) – Becoming an official מניח in winter תשל"ח (26:27) – First הנחה (28:12) – The nightmare of מקץ תש"מ (35:23) – How הגהה worked (37:01) – How to tell if a random page is מוגה (40:31) – Sichos that were difficult to remember/understand (43:06) – The difficulty of the pre-הקפות farbrengen (45:08) – Why they didn’t divide the task of remembering (45:49) – His role in מאמרים (46:56) – Keys to memory (51:43) – Making a mental map; numbering ideas (54:03) – Demonstrating samples (58:23) – A sharp מענה to a complicated question (1:01:43) – How he took the sharp מענות (1:03:33) – Edits to באתי לגני תש"מ, and the mysterious cutting of the page (1:08:18) – The Rebbe’s כתי"ק about radio (1:14:06) – Did you ever get a galley back from the Rebbe without any corrections? (1:15:03) – Cases when the Rebbe wrote מבהיל (1:23:48) – Working relationship with Reb Yoel (1:26:23) – Defying others to ask the Rebbe a personal question—and it paid off – Yiddish, Hebrew, and other languages – Adapting the spoken word to the written word – Transitioning to a computer in the mid-1980s – The Rebbe choosing fonts – Identifying sources – Sources that have not been found – The struggle and adrenaline rush to keep up with the Rebbe – The science and history of השמטות – When the Rebbe said that certain things should not be printed – Overview of ש"פ פנחס תשמ"ה – Overview of ליל שמח"ת תשמ"ז – The value of the בלתי מוגה even when there’s מוגה – About באתי לגני תשכ"ג Secrets of a Chozer: An Interview with Rabbi Simon Jacobson In honor of shnas hakhel, Unzer-Chadash Shul hosted Rabbi Simon Jacobson and had the opportunity to ask him about his work of remembering, transcribing, and publishing the Rebbe’s sichos. Posted in honor of Yud Shvat.

92

Dividing Tanach into Chapters: A Historical Overview

Feb 8, 2023

1:08:18

The division of Tanach into chapters didn’t originate with Jewish scholars or rabbis. This class surveys when, how, and why this became an accepted and standard Jewish division. We will also hear the voices of those who rejected this system and, on the other hand, those who embraced it. Dedicated in memory of Yaakov Koppel ben Elimelech Hakohen Dividing Tanach into Chapters: A Historical Overview

93

Debating the Death Penalty

Feb 15, 2023

1:10:58

In 1615, the Jewish community in Poland was confronted with a disturbing accusation of murder against one of its members. At the time, contemporary rabbis engaged in a dialogue on the most suitable course of action, debating whether the accused should face capital punishment. This discussion provides insight into the methods employed by rabbinic courts in addressing grave criminal offenses like murder and the criteria they applied in determining when the death penalty was a justifiable judicial response. Additionally, this analysis remains relevant today, as it prompts us to evaluate whether any of these principles and teachings have the potential to inform contemporary debates on the death penalty. Debating the Death Penalty

94

History and Development of the Talmudic Page

Feb 22, 2023

1:05:06

Join us on a journey through the rich history of Talmudic manuscripts and print editions. You will learn that although we don’t have manuscripts that can be definitively dated to before the twelfth century, a discerning eye can use extant manuscripts to hear distinct echoes of much older ones. Delve into the fascinating stories linked to the little-known Spanish and Portuguese printings that coincided with the end of Jewish life on the Iberian Peninsula and to Soncino’s controversial decision to place Tosafos on the page of the Gemara. Discover the introduction of folio numbers by Daniel Bomberg, and join us in the search for the first rabbi to utilize this revolutionary system. Finally, we’ll delve into the heartbreaking story of the burning of the Talmud in 1553 and the draconian censorship that followed, culminating in the notorious Basel edition. This lecture was recorded live by Jewish Multimedia Library, a.k.a. JML, Melbourne, Australia. Many additional recordings are available from their website: www.jml.org.au. History and Development of the Talmudic Page

95

Zecher vs. Zeicher: Unraveling the Parshas Zachor Mystery

Mar 1, 2023

1:05:03

Join us on this episode as we explore the centuries-old debate surrounding the placement of a tzeirei or segol in the reading for Parshas Zachor. Through the lens of ancient codices and special editions of Chumash, we’ll investigate the origins of this confusion and the reasons why communities began reciting both versions. We’ll also uncover the more profound significance of this divergence and what it can teach us about spiritual growth. Zecher vs. Zeicher: Unraveling the Parshas Zachor Mystery

96

The King’s Prayer: A Controversial Statement by a 19th-Century Rabbi

Mar 15, 2023

1:06:40

In today’s episode, we will step back in time to explore the controversy that erupted when a famous rabbi made a controversial statement about Dovid Hamelech and the role of Tehilim in Jewish life. We will dive into the heated discourse and the familiar fault lines it revealed within the Jewish community. We will gain insight into the differing views on the function and place of Torah study versus other forms of Jewish worship and the divergent attitudes about the image of the tzaddik in Jewish life. The King’s Prayer: A Controversial Statement by a 19th-Century Rabbi

97

Vanished Hero: Exploring the Absence of Moshe in the Haggadah

Mar 22, 2023

1:14:01

Join us for an in-depth discussion exploring the enigmatic absence of Moshe’s name from the Haggadah text. While his name does appear once in the text, this fact alone may not entirely resolve the mystery. We will scrutinize various explanations that have been presented over the past two centuries and analyze what they reveal about their proponents. Vanished Hero: Exploring the Absence of Moshe in the Haggadah

98

First Edition: The Rebbe’s References to the 1485 Soncino Haggadah

Mar 29, 2023

57:04

In his commentary on the Haggadah, the Lubavitcher Rebbe referenced many different sources from the vast library of Judaism, but three of them stand out from a bibliographic perspective: three references to the first dated printed edition of the Haggadah. Join us as we learn more about this edition, its historical context, and how the Rebbe used it to sort out some of the famous questions relating to the mah nishtanah, dayeinu, and the wisdom of the wise son. First Edition: The Rebbe’s References to the 1485 Soncino Haggadah

99

The Fate of the Marranos

Apr 19, 2023

59:15

In 1636, the Sephardic Jewish community in Amsterdam was embroiled in a heated debate over the fate of their converso relatives residing as Christians in Spain and Portugal. Would those who refuse to emigrate to reembrace Judaism be denied entry into the World to Come? In this class, we will explore the rich tapestry of sources both sides invoked during this intriguing chapter in Jewish history. We will delve into the arguments presented by both sides, gaining insights into the religious and social complexities that confronted Sephardic Jewry during this period. The Fate of the Marranos

100

The Lion and the Snake: Tensions Over Artistic Expression in the Medieval Sanctuary

May 17, 2023

1:00:11

Step back in time as we delve into a fascinating story about the Jewish communities of Cologne and Mayence around the period of the First Crusade. We will learn of an uproar caused by an extension to a synagogue adorned with imagery of lions and snakes. We will examine the halachic discussion of whether this violated the command against graven images. The Lion and the Snake: Tensions Over Artistic Expression in the Medieval Sanctuary

Popular Shows by Mordechai Dinerman מרדכי דינרמן