Tefillin, or phylacteries, are a set of small black leather boxes with leather straps containing scrolls of parchment inscribed with verses from the Torah. Tefillin are worn by adult Jews during weekday and Sunday morning prayers. In Orthodox and traditional communities, they are worn solely by men, while some Reform and Conservative (Masorti) communities allow them to be worn by any gender. In Jewish law (halacha), women are exempt from most time-dependent positive commandments, which include tefillin.

Reform Judaism, also known as Liberal Judaism or Progressive Judaism, is a major Jewish denomination that emphasizes the evolving nature of Judaism, the superiority of its ethical aspects to its ceremonial ones, and belief in a continuous revelation which is closely intertwined with human reason and not limited to the Theophany at Mount Sinai. A highly liberal strand of Judaism, it is characterized by little stress on ritual and personal observance, regarding Jewish law as non-binding and the individual Jew as autonomous, and by a great openness to external influences and progressive values.