Numbers 18:15
Every thing that opens the womb in all flesh, which they bring unto the LORD, whether it be of men or animals, shall be yours: nevertheless the firstborn of man shall you surely redeem, and the firstling of unclean animals shall you redeem.
Exodus 34:20
But the firstling of a donkey you shall redeem with a lamb: and if you redeem it not, then shall you break its neck. All the firstborn of your sons you shall redeem. And none shall appear before me empty.
Exodus 13:2
Sanctify unto me all the firstborn, whatsoever opens the womb among the children of Israel, both of man and of beast: it is mine.
Exodus 13:12-13
That you shall set apart unto the LORD all that opens the womb, and every firstling that comes of a beast which you have; the males shall be the LORD'S.
Exodus 22:29
You shall not delay to offer the first of your ripe fruits, and of the outflow of your presses: the firstborn of your sons shall you give unto me.
Leviticus 27:26-27
Only the firstling of the animals, which should be the LORD'S firstling, no man may dedicate it; whether it be ox, or sheep: it is the LORD'S.
Numbers 3:13
Because all the firstborn are mine; for on the day that I struck all the firstborn in the land of Egypt I hallowed unto me all the firstborn in Israel, both man and animal: mine shall they be: I am the LORD.
Numbers 3:46
And for those that are to be redeemed of the two hundred and threescore and thirteen of the firstborn of the children of Israel, who are more than the Levites;