Nehemiah 10:36

as well as the firstborn of our sons and of our cattle, as is written in the Law, and the firstborn of our herds and flocks, to bring to the house of our God, for the priests who minister in the house of our God.

Exodus 13:2

“Sanctify to Me [that is, set apart for My purpose] every firstborn, the first offspring of every womb among the children of Israel, both of man and of animal; it is Mine.”

Leviticus 27:26-27

‘However, the firstborn among animals, which as a firstborn belongs to the Lord, no man may consecrate, whether an ox or a sheep. It is [already] the Lord’s.

Exodus 13:12-15

you shall set apart and dedicate to the Lord all that first opens the womb. All the firstborn males of your livestock shall be the Lord’s.

Exodus 34:19

“All the firstborn males among your livestock belong to Me, whether cattle or sheep.

Numbers 18:9-19

This shall be yours of the most holy things, [reserved] from the fire: every offering of the people, every grain offering and sin offering and guilt offering, which they shall render (give) to Me, shall be most holy for you and for your sons.

Deuteronomy 12:6

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

1 Corinthians 9:6-14

Or is it only Barnabas and I who have no right to stop doing manual labor [in order to support our ministry]?

Galatians 6:6

The one who is taught the word [of God] is to share all good things with his teacher [contributing to his spiritual and material support].

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
“Sanctify to Me [that is, set apart for My purpose] every firstborn, the first offspring of every womb among the children of Israel, both of man and of animal; it is Mine.”
Exodus 34:19
“All the firstborn males among your livestock belong to Me, whether cattle or sheep.
Leviticus 27:26
‘However, the firstborn among animals, which as a firstborn belongs to the Lord, no man may consecrate, whether an ox or a sheep. It is [already] the Lord’s.
Numbers 18:15
Every firstborn of the womb of all flesh, whether it is man or animal, which they bring to the Lord, shall be yours; nevertheless, the firstborn of man you shall most certainly redeem, and the firstborn of unclean animals you shall redeem.
Deuteronomy 12:6
There you shall bring your burnt offerings, your sacrifices, your tithes, the contribution of your hand, your votive (pledged, vowed) offerings, your freewill (voluntary) offerings, and the firstborn of your herd and of your flock.

Unto

Numbers 18:9
This shall be yours of the most holy things, [reserved] from the fire: every offering of the people, every grain offering and sin offering and guilt offering, which they shall render (give) to Me, shall be most holy for you and for your sons.
1 Corinthians 9:6
Or is it only Barnabas and I who have no right to stop doing manual labor [in order to support our ministry]?
Galatians 6:6
The one who is taught the word [of God] is to share all good things with his teacher [contributing to his spiritual and material support].