Numbers 18:15

All that breaketh the matrix of all flesh that men bring unto the LORD, both of man and beast, shall be thine. Neverthelater, the firstborn of man shall be redeemed, and the firstborn of unclean beasts shall be redeemed.

Exodus 34:20

But the first of the ass thou shalt buy out with a sheep, or if thou redeem him not: see thou break his neck. All the firstborn of thy sons thou must needs redeem. And see that no man appear before me empty.

Exodus 13:2

"Sanctify unto me all the firstborn that open all manner matrices among the children of Israel, as well of men as of beasts: for they are mine."

Exodus 13:12-13

then thou shalt appoint unto the LORD all that openeth the matrix, and all the firstborn among the beasts which thou hast if they be males.

Exodus 22:29

Thy fruits, whether they be dry or moist, see thou keep not back. Thy firstborn son thou shalt give me:

Leviticus 27:26-27

"'But the firstborn of the beasts that pertain unto the LORD, may no man sanctify: whether it be ox or sheep, for they are the LORD's already.

Numbers 3:13

Because all the firstborn are mine - for the same day that I smote all the firstborn in the land of Egypt, I hallowed unto me all the firstborn in Israel, both man and beast, and mine they shall be: for I am the LORD."

Numbers 3:46

And for the redeeming of the two hundred and seventy three which are more than the Levites in the firstborn of the children of Israel,

Treasury of Scripture Knowledge

Summary

Numbers 18:15

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.

The firstborn

Exodus 13:13

Exodus 34:20

Leviticus 27:27

General references

Numbers 3:15

Bible References

The firstborn

And all the firstborn of the asses, thou shalt redeem with a sheep: if thou redeem him not, then break his neck. But all the firstborn among thy children shalt thou buy out.

If it be an unclean beast, then let him redeem it as it is set at, and give the fifth part more thereto. If it be not redeemed, then let it be sold as it is rated.

General references

"Number the children of Levi in the houses of their fathers and kindreds, all that are males from a month old and above."