Exodus 13:8-14

8On that day explain to your son, ‘This is because of what the Lord did for me when I came out of Egypt.’

9Let it serve as a sign for you on your hand and as a reminder on your forehead, so that the Lord’s instruction may be in your mouth; for the Lord brought you out of Egypt with a strong hand.

10Keep this statute at its appointed time from year to year.

11“When the Lord brings you into the land of the Canaanites, as he swore to you and your ancestors, and gives it to you,

12you are to present to the Lord every firstborn male of the womb. All firstborn offspring of the livestock you own that are males will be the Lord’s.

13You must redeem every firstborn of a donkey with a flock animal, but if you do not redeem it, break its neck. However, you must redeem every firstborn among your sons.

14“In the future, when your son asks you, ‘What does this mean?’ say to him, ‘By the strength of his hand the Lord brought us out of Egypt, out of the place of slavery.