Exodus 13:11

8 You shall tell your son in that day, saying, `It is because of that which Yahweh did for me when I came forth out of Egypt.`

9 It shall be for a sign to you on your hand, and for a memorial between your eyes, that the law of Yahweh may be in your mouth; for with a strong hand Yahweh has brought you out of Egypt.

10 You shall therefore keep this ordinance in its season from year to year.

11 "It shall be, when Yahweh shall bring you into the land of the Canaanite, as he swore to you and to your fathers, and shall give it you,

12 that you shall set apart to Yahweh all that opens the womb, and every firstborn which you have that comes from an animal. The males shall be Yahweh`s.

13 Every firstborn of a donkey you shall redeem with a lamb; and if you will not redeem it, then you shall break its neck; and you shall redeem all the firstborn of man among your sons.

14 It shall be, when your son asks you in time to come, saying, `What is this?` that you shall tell him, `By strength of hand Yahweh brought us out from Egypt, from the house of bondage;