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

This weekend we welcome the month of Cheshvan and celebrate the first Rosh Chodesh of the new year 5785. In ancient times, the Sanhedrin would officially announce the start of a new month upon sighting of the new moon. Once the Sanhedrin was disbanded, the Sages fixed a set calendar for the millennia ahead. And since then, instead of a formal announcement of a new month upon new moon sighting, we recite a birkat levanah, a “blessing on the moon”. Where exactly did this blessing and practice originate? And what is the meaning behind its enigmatic text?