Tag Archives: Cairo Geniza

Mysteries & Secrets of Tefillin

At the end of this week’s parasha, Ekev, we read one of four passages in the Torah that speak of the great mitzvah of tefillin. In the list of 613, tefillin is actually two separate mitzvot—one for the head, and one for the arm. Some even say that tefillin counts as eight mitzvot, since we should multiply by four for the four times the Torah speaks of it! (Menachot 44a) Today, the mitzvah of tefillin is one of the best-known practices in all of Judaism, thanks in large part to the Lubavitcher Rebbe’s tefillin campaign starting in 1967, in the days leading up to the miraculous Six-Day War. We find many Jews who are otherwise secular or unaffiliated still laying tefillin every day. Following October 7, demand for tefillin was so high that there were reportedly shortages. Yet, tefillin binding hasn’t always been so widespread and well-known.

The Talmud (Berakhot 47a) suggests that one thing distinguishing Torah scholars (talmidei chakhamim) from the general public (am ha’aretz) is that the latter do not don tefillin. Even in responsa literature from the times of the Geonim (roughly 500-1000 CE), we find Jews asking if tefillin should be worn by all Jewish men, or if it was specifically reserved for great rabbis and Torah scholars. More puzzling still, we find that no other prophet besides Moses speaks of them, and there is no explicit mention of tefillin anywhere in the rest of Tanakh. Nor is there any historical or archaeological evidence of tefillin prior to about two millennia ago. Tefillin may just be the most mysterious Torah mitzvah we have. Where did it really come from, and what secrets does it contain? Continue reading

Things You Didn’t Know About the Arizal

Last Friday, the fifth of Av, was the yahrzeit of the great Ari HaKadosh or Arizal, “The Holy Lion of Blessed Memory”, Rabbi Itzchak Luria (1534-1572). Few have had as monumental an impact on Judaism as the Arizal. Despite being an educator for only a couple of years, and passing away at the young age of 37 or 38, his teachings shaped the course of Jewish history for the next five centuries, until the present. Who was the Arizal, what did he reveal, and why was he so influential? Continue reading

Judaism vs. Islam

Why did Islam emerge in 7th-century Arabia and what role did Jews play in its early history? How does Judaism view Islam today? And what are the similarities and differences between the two religions? Find out in this class where we also explore the Jewish wives and advisors of Muhammad, if a Jew is allowed to pray in a mosque, and an incredible prophecy about the role of Ishmael at the End of Days.

For the class on ‘Judaism vs. Christianity’, please see here.

Understanding the Arab-Israeli Conflict in 5 Easy Points (also includes a video about the true location of Al-Aqsa).

On the Arab-Jewish kings Abu Kariba and Dhu Nawas.

On Rayhana and Safiyya, the Jewish wives of Muhammad.

Please see also ‘How the Torah Alluded to Christianity and Islam’ in Garments of Light, Volume Two, which also has an in-depth exploration of the proper pronunciations of the Hebrew alphabet.

Regarding black and blue colours in ancient texts, see here.

For the paper on ‘Muhammad, the Jews, and the Composition of the Qur’an: Sacred History and Counter-History’ see here.