Phylacteries, or tefillin (Hebrew), are two small leather boxes containing certain scripture verses on pieces of parchment. Traditional Jewish men bind them by black leather straps on their foreheads and left arms during morning services every day except Sabbaths and certain festivals and other occasions. The practice of putting on phylacteries follows two passages in Deuteronomy and two in Exodus requiring Jews to bind these words of the law for “a sign upon thy hand and a frontlet between thine eyes.”