Exodus 4:22

22Then you shall say to Pharaoh, ‘Thus says the Lord, aIsrael is my bfirstborn son,

Exodus 13:12-15

12 cyou shall set apart to the Lord all that first opens the womb. All the firstborn of your animals that are males shall be the Lord’s. 13 dEvery firstborn of a donkey you shall redeem with a lamb, or if you will not redeem it you shall break its neck. Every efirstborn of man among your sons you shall redeem. 14 fAnd when in time to come your son asks you, ‘What does this mean?’ you shall say to him, g‘By a strong hand the Lord brought us out of Egypt, from the house of hslavery. 15For when Pharaoh stubbornly refused to let us go, the iLord killed all the firstborn in the land of Egypt, both the firstborn of man and the firstborn of animals. Therefore I sacrifice to the Lord all the males that first open the womb, but jall the firstborn of my sons I redeem.’

Exodus 22:29-30

29“You shall not delay to offer from the fullness of your harvest and from the outflow of your presses. kThe firstborn of your sons you shall give to me. 30 lYou shall do the same with your oxen and with your sheep: mseven days it shall be with its mother; on the eighth day you shall give it to me.

Exodus 23:19

19“The best of the nfirstfruits of your ground you shall bring into the house of the Lord your God.

o“You shall not boil a young goat in its mother’s milk.

Exodus 34:19-20

19 pAll that open the womb are mine, all your male
Septuagint, Theodotion, Vulgate, Targum; the meaning of the Hebrew is uncertain
livestock, the firstborn of cow and sheep.
20The rfirstborn of a donkey you shall redeem with a lamb, or if you will not redeem it you shall break its neck. All the firstborn of your sons you shall redeem. And snone shall appear before me empty-handed.

Leviticus 27:26

26But a tfirstborn of animals, which as a firstborn belongs to the Lord, no man may dedicate; whether ox or sheep, it is the Lord’s.

Numbers 3:13

13for uall the firstborn are mine. vOn the day that I struck down all the firstborn in the land of Egypt, I consecrated for my own all the firstborn in Israel, both of man and of beast. They shall be mine: I am the Lord.”

Numbers 8:16-17

16For they are wwholly given to me from among the people of Israel. xInstead of all who open the womb, the firstborn of all the people of Israel, I have taken them for myself. 17 yFor all the firstborn among the people of Israel are mine, both of man and of beast. On the day that I struck down all the firstborn in the land of Egypt I consecrated them for myself,
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