Numbers 18:15

Everything that opens the womb, any living thing that they bring to the LORD whether from human beings or animals are for you. Just be sure that you redeem the firstborn of people and the firstborn of unclean animals.

Exodus 34:20

You are to redeem the firstborn of a donkey with a sheep, and if you don't redeem it, you are to break its neck. You are to redeem every firstborn of your sons, and no one is to appear before me empty-handed.

Exodus 13:2

"Consecrate to me every firstborn male. Whatever is the first to open the womb among the Israelis, both of humans and of animals, belongs to me."

Exodus 13:12-13

you are to dedicate to the LORD everything that first opens the womb. All the firstborn males of your livestock belong to the LORD.

Exodus 22:29

"You are not to hold back the fullness of your harvest and the outflow of your wine presses. You are to give to me the firstborn of your sons.

Leviticus 27:26-27

"No person is to consecrate the firstborn, because the firstborn of the animals already belongs to the LORD. Whether ox or goat, it belongs to the LORD.

Numbers 3:13

because all the first-born belong to me. When I destroyed all the firstborn in the land of Egypt, I consecrated all the first-born in Israel for myself from human beings to livestock. They belong to me, since I am the LORD."

Numbers 3:46

You are to pay a ransom for the 273 first-born Israelis who exceed the census number of the descendants of Levi,

Treasury of Scripture Knowledge

Summary

Every thing that openeth the matrix in all flesh, which they bring unto the LORD, whether it be of men or beasts, shall be thine: nevertheless the firstborn of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.

General references

Bible References

The firstborn

Exodus 13:13
You are to redeem every firstborn donkey with a lamb, and if you don't redeem it, you are to break its neck. You are to redeem every firstborn among your sons.
Exodus 34:20
You are to redeem the firstborn of a donkey with a sheep, and if you don't redeem it, you are to break its neck. You are to redeem every firstborn of your sons, and no one is to appear before me empty-handed.
Leviticus 27:27
If it's an unclean animal, then he is to ransom it according to your valuation, adding a fifth to it. If it's not redeemed, then it is to be sold according to your valuation.

General references

Numbers 3:15
"Number the descendants of Levi according to their ancestral houses and tribes, numbering every male from a month old and above."

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