Mordechai Dinerman

1

The Rabbi-Doctor Who Wrote a Sefer on the Beis Hamikdash with Both Hands Tied Behind His Back

Jul 16, 2026

1:04:54

In 1612, Avraham Portaleone of Mantua published a landmark work of encyclopedic proportions covering all things Beis Hamikdash. Reading through four of his discussions, we meet a man working under far-from-ideal conditions. His sefer turns out to be part of a larger story about the struggles of Jewish printing and book possession in sixteenth- and seventeenth-century Italy. The Rabbi-Doctor Who Wrote a Sefer on the Beis Hamikdash with Both Hands Tied Behind His Back

2

Did Rambam Actually Set Foot on Har Habayis?

Apr 23, 2026

1:03:21

In the late 1920s, a Jerusalem rabbi cited an obscure passage describing a certain Rabbi Moshe’s pilgrimage to the Holy Land, including what appeared to be a visit to the Temple Mount itself. He seized on it as proof that going there was halachically permitted. This sparked a fierce debate over the passage: Was it even credible? Who exactly was this Rabbi Moshe? Did the text actually refer to the Temple Mount? And if a great rabbi really did go there, what would that mean for us today? This is the second installment in a series about going up onto Har Habayis. Did Rambam Actually Set Foot on Har Habayis?

3

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

4

From Philadelphia to Newport: An Early American Teshuvah (1790)

Jul 1, 2026

1:14:24

In 1790, Moses Seixas of Newport, Rhode Island, and Manuel Josephson of Philadelphia corresponded, with Josephson composing what effectively amounts to a halachic teshuvah. Josephson raised concerns about the conduct of the Touro Synagogue in Newport, arguing that elements of the service were not being properly observed. The exchange provides an important window into the religious commitments and halachic awareness of early American Jews. It also stands as one of the earliest examples of a rabbinic-style teshuvah in the formative years of Jewish life in the United States. From Philadelphia to Newport: An Early American Teshuvah (1790)

5

Is the Dome of the Rock Where the Mikdash Stood?

Jun 4, 2026

1:14:25

Whether Jews may enter Har Habayis largely depends on whether we know where the Beis Hamikdash stood. A common assumption is that we don’t know for sure, but that assumption has a history. This class traces the story of this uncertainty, primarily through the accounts of Jewish travelers who visited Eretz Yisrael and recorded what they saw and heard. This is the third installment in a series about going up onto Har Habayis. Is the Dome of the Rock Where the Mikdash Stood?

6

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

7

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

8

What Did the Rebbe Say About Going on Har Habayis?

Jun 16, 2026

1:11:05

In this final class of the series, we will examine the Rebbe’s statements and correspondence regarding going up to Har Habayis. By studying the available sources, we will seek to better understand what the Rebbe did—and did not—say about this complex and significant question. This is the fourth and final installment on this topic. What Did the Rebbe Say About Going on Har Habayis?

9

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

10

Lost Scrolls, Lost Souls: A Spanish Jew’s Plea to Rediscover Tanach | Favorite Episodes

Dec 27, 2023

1:02:10

Tunisian Jews used to refer to Tanach with a very odd name, and few understood why. Fortunately, illuminated medieval Jewish manuscripts can help solve this mystery. They bring us back to the 14th century, where we find Rabbi Yitzchak ben Moshe Halevi fervently contending that there has been a neglect of studying Tanach and that this is akin to abandoning the sacred Beis Hamikdash. Lost Scrolls, Lost Souls: A Spanish Jew’s Plea to Rediscover Tanach | Favorite Episodes

Mordechai Dinerman

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