Nehemiah 10:36

As well as the first of our sons and of our cattle, as it is recorded in the law. The first lambs of our herds and of our flocks, which are to be taken to the house of our God, to the priests who are servants in the house of our God:

Exodus 13:2

Consecrate (appoint) (sanctify) all the first-born males to me. Every first-born male Israelite and every first-born male animal belongs to me!

Leviticus 27:26-27

A firstborn animal already belongs to Jehovah because it was born first. Therefore, it cannot be set apart as holy. Whether it is a bull or a sheep, it belongs to Jehovah.

Exodus 13:12-15

sacrifice every firstborn male offspring to Jehovah. The firstborn male offspring of each of your animals belongs to Jehovah.

Exodus 34:19

Every first male offspring is mine. The firstborn males of all your livestock, whether cattle, sheep, or goats are mine.

Numbers 18:9-19

That part of the most holy offerings that is not burned belongs to you. It may come from a grain offering, an offering for sin, or a guilt offering. Whatever is brought to me, as a most holy offering will belong to you and your sons.

Deuteronomy 12:6

There you shall bring your burnt offerings, your sacrifices, your tithes, and the contribution of your hand, your vowed offerings, your freewill offerings, and the firstborn of your herd and of your flock.

1 Corinthians 9:6-14

Or is it only Barnabas and I who do not have the right to refrain from secular work?

Galatians 6:6

But let him that is orally taught in the word share all good things.

Treasury of Scripture Knowledge

Summary

Also the firstborn of our sons, and of our cattle, as it is written in the law, and the firstlings of our herds and of our flocks, to bring to the house of our God, unto the priests that minister in the house of our God:

Bible References

The first-born

Exodus 13:2
Consecrate (appoint) (sanctify) all the first-born males to me. Every first-born male Israelite and every first-born male animal belongs to me!
Exodus 34:19
Every first male offspring is mine. The firstborn males of all your livestock, whether cattle, sheep, or goats are mine.
Leviticus 27:26
A firstborn animal already belongs to Jehovah because it was born first. Therefore, it cannot be set apart as holy. Whether it is a bull or a sheep, it belongs to Jehovah.
Numbers 18:15
Every firstborn male, human or animal that is brought to Jehovah is yours. But you must buy back every firstborn son and the firstborn male of any unclean animal.
Deuteronomy 12:6
There you shall bring your burnt offerings, your sacrifices, your tithes, and the contribution of your hand, your vowed offerings, your freewill offerings, and the firstborn of your herd and of your flock.

Unto

Numbers 18:9
That part of the most holy offerings that is not burned belongs to you. It may come from a grain offering, an offering for sin, or a guilt offering. Whatever is brought to me, as a most holy offering will belong to you and your sons.
1 Corinthians 9:6
Or is it only Barnabas and I who do not have the right to refrain from secular work?
Galatians 6:6
But let him that is orally taught in the word share all good things.