Exodus 13:9-16

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

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

11“And it shall be, when the Lord brings you into the land of the Canaanites, as He swore to you and your fathers, and gives it to you,

12that you shall set apart to the Lord all that open the womb, that is, every firstborn that comes from an animal which you have; the males shall be the Lord’s.

13But 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 all the firstborn of man among your sons you shall redeem.

14So it shall be, when your son asks you in time to come, saying, ‘What is this?’ that you shall say to him, ‘By strength of hand the Lord brought us out of Egypt, out of the house of bondage.

15And it came to pass, when Pharaoh was stubborn about letting us go, that the Lord killed all the firstborn in the land of Egypt, both the firstborn of man and the firstborn of beast. Therefore I sacrifice to the Lord all males that open the womb, but all the firstborn of my sons I redeem.’

16It shall be as a sign on your hand and as frontlets between your eyes, for by strength of hand the Lord brought us out of Egypt.”