Exodus 13:8-14

81You shall tell your son on that day, saying, ‘It is because of what the Lord did for me when I came out of Egypt.’ 9And 2it shall 3serve as a sign to you on your hand, and as a reminder 4on your forehead, that the law of the Lord may be in your mouth; for with 5a powerful hand the Lord brought you out of Egypt. 10Therefore, you shall 6keep this ordinance at its appointed time from 7year to year.

11“Now when 8the Lord brings you to the land of the Canaanite, as 9He swore to you and to your fathers, and gives it to you, 1210you shall 11devote to the Lord the first 12offspring of every womb, and 13the first offspring of every beast that you own; the males belong to the Lord. 13But 14every first 15offspring of a donkey you shall redeem with a lamb, but if you do not redeem it, then you shall break its neck; and 16every firstborn of man among your sons you shall redeem. 1417And it shall be when your son asks you in time to come, saying, ‘What is this?’ then you shall say to him, ‘18With a 19powerful hand the Lord brought us out of Egypt, from the house of 20slavery.