Two prayer boxes with leather straps worn on the forehead and the left arm. The boxes contain four selections from the Bible (Ex. 13:1-10, 11-16 and Deut. 6:4-9, 11:13-21), inscribed on parchment, which proclaim the existence and unity of God and serve as a reminder of the liberation from Egypt. They are worn during the morning prayers on each weekday and the afternoon service on the Ninth of Ab. by Jewish males who have reached the age of bar mitzvah. Since Sabbaths and festivals are themselves “signs,” no phylacteries are worn on these days.