Deuteronomy 15:19

“You shall consecrate (set apart) to the Lord your God all the firstborn males that are born of your herd and flock. You shall not work with the firstborn of your herd, nor shear the firstborn of your flock.

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 13:12

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.

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.

Numbers 18:17

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

Deuteronomy 12:17

You are forbidden to eat within your [city] 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, or your freewill offerings, or the contribution of your hand.

Deuteronomy 16:14

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 within your city.

Exodus 34:19

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

Numbers 3:13

for all the firstborn are Mine. On the day that I killed all the firstborn in the land of Egypt, I consecrated for Myself all the firstborn in Israel, both man and animal. 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 out of all your tribes to establish His Name there for His dwelling [place], and there you shall come [to worship Him].

Deuteronomy 14:23

You shall eat the tithe (tenth) of your grain, your new wine, your oil, and the firstborn of your herd and your flock before the Lord your God in the place where He chooses to establish His Name (Presence), so that you may learn to fear [and worship] the Lord your God [with awe-filled reverence and profound respect] 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 within your [city] gates, and the stranger and the orphan and the widow who are among you, at the place where the Lord your God chooses to establish His Name (Presence).

Romans 8:29

For those whom He foreknew [and loved and chose beforehand], He also predestined to be conformed to the image of His Son [and ultimately share in His complete sanctification], so that He would be the firstborn [the most beloved and honored] among many believers.

Hebrews 12:23

and to the general assembly and assembly of the firstborn who are registered [as citizens] in heaven, and to God, who is Judge of all, and to the spirits of the righteous (the redeemed in heaven) who have been made perfect [bringing them to their final glory],

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 [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 3:13
for all the firstborn are Mine. On the day that I killed all the firstborn in the land of Egypt, I consecrated for Myself all the firstborn in Israel, both man and animal. They shall be mine; I am the Lord.”
Numbers 18:17
But the firstborn of a cow or of a sheep or of a goat you shall not redeem; they are holy [and belong to the Lord]. You shall sprinkle their blood on the altar and shall offer up their fat in smoke as an offering by fire, for a sweet and soothing aroma to the Lord.
Romans 8:29
For those whom He foreknew [and loved and chose beforehand], He also predestined to be conformed to the image of His Son [and ultimately share in His complete sanctification], so that He would be the firstborn [the most beloved and honored] among many believers.
Hebrews 12:23
and to the general assembly and assembly of the firstborn who are registered [as citizens] in heaven, and to God, who is Judge of all, and to the spirits of the righteous (the redeemed in heaven) who have been made perfect [bringing them to their final glory],

Thou shalt do

Deuteronomy 12:5
But you shall seek the Lord at the place which the Lord your God will choose out of all your tribes to establish His Name there for His dwelling [place], and there you shall come [to worship Him].
Deuteronomy 14:23
You shall eat the tithe (tenth) of your grain, your new wine, your oil, and the firstborn of your herd and your flock before the Lord your God in the place where He chooses to establish His Name (Presence), so that you may learn to fear [and worship] the Lord your God [with awe-filled reverence and profound respect] 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 within your [city] gates, and the stranger and the orphan and the widow who are among you, at the place where the Lord your God chooses to establish His Name (Presence).
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.