9 It shall be as a sign to you upon your hand and as a memorial between your eyes, that the law of the Lord may be in your mouth; for with a strong hand the Lord has brought you out of Egypt.
10 You shall therefore keep this ordinance at this time from year to year.
11 And when the Lord brings you into the land of the Canaanites, as He promised and swore to you and your fathers, and shall give it to you,
12 You shall set apart to the Lord all that first opens the womb. All the firstlings of your livestock that are males shall be the Lord's.
13 Every firstborn of a donkey you shall redeem by [substituting for it] a lamb, or if you will not redeem it, then you shall break its neck; and every firstborn among your sons shall you redeem.
14 And when, in time to come, your son asks you, What does this mean? You shall say to him, By strength of hand the Lord brought us out from Egypt, from the house of bondage and bondmen.
15 For when Pharaoh stubbornly refused to let us go, the Lord slew all the firstborn in the land of Egypt, both the firstborn of man and of livestock. Therefore I sacrifice to the Lord all the males that first open the womb; but all the firstborn of my sons I redeem.