The archaeological evidence, together with consideration of various biblical passages and even of halakhah, suggests that tefillin were originally practiced as a length-of-days amulet. While we cannot be sure when this began, the ritual – in a form fairly similar to the one known today – already existed during the late Second Temple period, which witnessed the Jewish encounter with Hellenistic culture. | Dr. Yehudah Cohn
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Tangled Up in Text: Tefillin and the Ancient World: Cohn, Yehudah B: 9781930675797: : Books
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