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

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

3

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

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

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

8

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?

9

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

10

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

Mordechai Dinerman

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