 and thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eyes, and thou shalt write them upon the post of thy house, and on thy gates. This text is part of the Shema, which is a command from God to the children of Israel to live as the children of God. The command also included the obligation to teach the commands of God to their children, and to talk to them everywhere and every place at all times.