The LORD said to Moses,
"Consecrate to me all the first-born; whatever is the first to open the womb among the people of Israel, both of man and of beast, is mine."
And Moses said to the people, "Remember this day, in which you came out from Egypt, out of the house of bondage, for by strength of hand the LORD brought you out from this place; no leavened bread shall be eaten.
This day you are to go forth, in the month of Abib.
And when the LORD brings you into the land of the Canaanites, the Hittites, the Amorites, the Hivites, and the Jeb'usites, which he swore to your fathers to give you, a land flowing with milk and honey, you shall keep this service in this month.
Seven days you shall eat unleavened bread, and on the seventh day there shall be a feast to the LORD.
Unleavened bread shall be eaten for seven days; no leavened bread shall be seen with you, and no leaven shall be seen with you in all your territory.
And you shall tell your son on that day, 'It is because of what the LORD did for me when I came out of Egypt.'
And it shall be to you as a sign on 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.
You shall therefore keep this ordinance at its appointed time from year to year.
"And when the LORD brings you into the land of the Canaanites, as he swore to you and your fathers, and shall give it to you,
you shall set apart to the LORD all that first opens the womb. All the firstlings of your cattle that are males shall be the LORD's.
Every firstling of an ass you shall redeem with a lamb, or if you will not redeem it you shall break its neck. Every first-born of man among your sons you shall redeem.
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 of Egypt, from the house of bondage.
For when Pharaoh stubbornly refused to let us go, the LORD slew all the first-born in the land of Egypt, both the first-born of man and the first-born of cattle. Therefore I sacrifice to the LORD all the males that first open the womb; but all the first-born of my sons I redeem.'
It shall be as a mark on your hand or frontlets between your eyes; for by a strong hand the LORD brought us out of Egypt."
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (Revised Standard Version - Holy Bible)