Exodus 13:8-10

Young's Literal Translation

⁸ `And thou hast declared to thy son in that day, saying, `[It is] because of what Jehovah did to me, in my going out from Egypt,

⁹ and it hath been to thee for a sign on thy hand, and for a memorial between thine eyes, so that the law of Jehovah is in thy mouth, for by a strong hand hath Jehovah brought thee out from Egypt;

¹⁰ and thou hast kept this statute at its appointed season from days to days.