(1) While the Torah mentions tefillin , but gives no details, everyone throughout history has had the same black boxes, leather straps and identical parchments inside.(2) We study with our eyes, mouth, and brain, eat matzah with our mouths, listen to the shofar with our ears, and wear the tefillin on the arm and head.(3) Still, one may never make use of a printed Torah, tefillin , or mezuzah for sacred purpose.(4) The first cut is done at the front of the head, at the spot where the boy will later place his tefillin upon becoming Bar Mitzvah.(5) Boys aren't allowed to wear tefillin until after their bar mitzvah; women can choose to wear them but rarely do.
