Deuteronomy 15:19

You shall consecrate to the Lord your God all the firstborn males that are born of your herd and of your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.

Exodus 13:2

Sanctify to Me every firstborn, the first offspring of every womb among the sons of Israel, both of man and beast; it belongs to Me.”

Exodus 13:12

you shall devote to the Lord the first offspring of every womb, and the first offspring of every beast that you own; the males belong to the Lord.

Leviticus 27:26

However, a firstborn among animals, which as a firstborn belongs to the Lord, no man may consecrate it; whether ox or sheep, it is the Lord’s.

Numbers 18:15

Every first issue of the womb of all flesh, whether man or animal, which they offer to the Lord, shall be yours; nevertheless the firstborn of man you shall surely redeem, and the firstborn of unclean animals you shall redeem.

Numbers 18:17

But the firstborn of an ox or the firstborn of a sheep or the firstborn of a goat, you shall not redeem; they are holy. You shall sprinkle their blood on the altar and shall offer up their fat in smoke as an offering by fire, for a soothing aroma to the Lord.

Deuteronomy 12:17

You are not allowed to eat within your gates the tithe of your grain or new wine or oil, or the firstborn of your herd or flock, or any of your votive offerings which you vow, or your freewill offerings, or the contribution of your hand.

Deuteronomy 16:14

and you shall rejoice in your feast, you and your son and your daughter and your male and female servants and the Levite and the stranger and the orphan and the widow who are in your towns.

Exodus 34:19

The first offspring from every womb belongs to Me, and all your male livestock, the first offspring from cattle and sheep.

Numbers 3:13

For all the firstborn are Mine; on the day that I struck down all the firstborn in the land of Egypt, I sanctified to Myself all the firstborn in Israel, from man to beast. They shall be Mine; I am the Lord.”

Deuteronomy 12:5-7

But you shall seek the Lord at the place which the Lord your God will choose from all your tribes, to establish His name there for His dwelling, and there you shall come.

Deuteronomy 14:23

You shall eat in the presence of the Lord your God, at the place where He chooses to establish His name, the tithe of your grain, your new wine, your oil, and the firstborn of your herd and your flock, so that you may learn to fear the Lord your God always.

Deuteronomy 16:11

and you shall rejoice before the Lord your God, you and your son and your daughter and your male and female servants and the Levite who is in your town, and the stranger and the orphan and the widow who are in your midst, in the place where the Lord your God chooses to establish His name.

Romans 8:29

For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren;

Hebrews 12:23

to the general assembly and church of the firstborn who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the righteous made perfect,

Treasury of Scripture Knowledge

Summary

All the firstling males that come of thy herd and of thy flock thou shalt sanctify unto the LORD thy God: thou shalt do no work with the firstling of thy bullock, nor shear the firstling of thy sheep.

Bible References

The firstling

Exodus 13:2
Sanctify to Me every firstborn, the first offspring of every womb among the sons of Israel, both of man and beast; it belongs to Me.”
Exodus 34:19
The first offspring from every womb belongs to Me, and all your male livestock, the first offspring from cattle and sheep.
Leviticus 27:26
However, a firstborn among animals, which as a firstborn belongs to the Lord, no man may consecrate it; whether ox or sheep, it is the Lord’s.
Numbers 3:13
For all the firstborn are Mine; on the day that I struck down all the firstborn in the land of Egypt, I sanctified to Myself all the firstborn in Israel, from man to beast. They shall be Mine; I am the Lord.”
Numbers 18:17
But the firstborn of an ox or the firstborn of a sheep or the firstborn of a goat, you shall not redeem; they are holy. You shall sprinkle their blood on the altar and shall offer up their fat in smoke as an offering by fire, for a soothing aroma to the Lord.
Romans 8:29
For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren;
Hebrews 12:23
to the general assembly and church of the firstborn who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the righteous made perfect,

Thou shalt do

Deuteronomy 12:5
But you shall seek the Lord at the place which the Lord your God will choose from all your tribes, to establish His name there for His dwelling, and there you shall come.
Deuteronomy 14:23
You shall eat in the presence of the Lord your God, at the place where He chooses to establish His name, the tithe of your grain, your new wine, your oil, and the firstborn of your herd and your flock, so that you may learn to fear the Lord your God always.
Deuteronomy 16:11
and you shall rejoice before the Lord your God, you and your son and your daughter and your male and female servants and the Levite who is in your town, and the stranger and the orphan and the widow who are in your midst, in the place where the Lord your God chooses to establish His name.
Numbers 18:15
Every first issue of the womb of all flesh, whether man or animal, which they offer to the Lord, shall be yours; nevertheless the firstborn of man you shall surely redeem, and the firstborn of unclean animals you shall redeem.