Exodus 13:8–14

⁸And thou shalt inform thy son in that day, saying, It is because of what Jehovah did to me when I came out of Egypt. ⁹And it shall be for a sign to thee on thy hand, and for a memorial between thine eyes, that the law of Jehovah may be in thy mouth; for with a powerful hand hath Jehovah brought thee out of Egypt. ¹⁰And thou shalt keep this ordinance at its set time from year to year.

¹¹And it shall be when Jehovah hath brought thee into the land of the Canaanites, as he hath sworn to thee and to thy fathers, and hath given it thee, ¹²that thou shalt offer unto Jehovah all that breaketh open the womb, and every firstling that cometh of cattle which is thine: the males shall be Jehovah’s. ¹³And every firstling of an ass shalt thou ransom with a lamb; and if thou do not ransom it, thou shalt break its neck; and every firstborn of a man among thy sons shalt thou ransom. ¹⁴And it shall be when thy son asketh thee in time to come, saying, What is this? that thou shalt say to him, With a powerful hand Jehovah brought us out from Egypt, out of the house of bondage.