Deuteronomy 15:19

To Jehovah your God you shall consecrate 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

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 13:12

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

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.

Numbers 18:17

You must never buy back a firstborn bull, sheep, or goat. They are holy. Throw the blood from these animals against the altar. Burn the fat as an offering by fire, a soothing aroma to Jehovah.

Deuteronomy 12:17

You may not eat Jehovah's offerings in your cities. Those offerings are: one-tenth of your grain, new wine, and olive oil; the firstborn of your cattle, sheep, or goats; the offerings you vow to bring; your freewill offerings; and your contributions.

Deuteronomy 16:14

Enjoy yourselves at the festival along with your sons, daughters, male and female slaves, the Levites, foreigners, orphans, and widows who live in your cities.

Exodus 34:19

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

Numbers 3:13

because every firstborn is mine. The day I killed every firstborn male in Egypt, I set apart as holy every firstborn in Israel, whether human or animal. They will be mine. I am Jehovah.

Deuteronomy 12:5-7

You should seek Jehovah at the place Jehovah your God chooses out of all your tribes. This is where he will dwell and establish his name. This is where you should go.

Deuteronomy 14:23

You shall eat in the presence of Jehovah 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 respect Jehovah your God always.

Deuteronomy 16:11

Enjoy yourselves in the presence of Jehovah your God along with your sons, daughters, male and female slaves, the Levites who live in your cities, the foreigners, orphans, and widows who live among you. Enjoy yourselves at the place Jehovah your God will choose as a dwelling for his name.

Romans 8:29

Those he first recognized, he ordained in advance that they be conformed to the image of his Son, that he might be the firstborn among many brothers.

Hebrews 12:23

to the general assembly and congregation of the firstborn who are enrolled in heaven, and to God the Judge of all, and to the spirits of just (righteous) (holy) men made perfect (mature) (having all needed qualities).

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
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 3:13
because every firstborn is mine. The day I killed every firstborn male in Egypt, I set apart as holy every firstborn in Israel, whether human or animal. They will be mine. I am Jehovah.
Numbers 18:17
You must never buy back a firstborn bull, sheep, or goat. They are holy. Throw the blood from these animals against the altar. Burn the fat as an offering by fire, a soothing aroma to Jehovah.
Romans 8:29
Those he first recognized, he ordained in advance that they be conformed to the image of his Son, that he might be the firstborn among many brothers.
Hebrews 12:23
to the general assembly and congregation of the firstborn who are enrolled in heaven, and to God the Judge of all, and to the spirits of just (righteous) (holy) men made perfect (mature) (having all needed qualities).

Thou shalt do

Deuteronomy 12:5
You should seek Jehovah at the place Jehovah your God chooses out of all your tribes. This is where he will dwell and establish his name. This is where you should go.
Deuteronomy 14:23
You shall eat in the presence of Jehovah 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 respect Jehovah your God always.
Deuteronomy 16:11
Enjoy yourselves in the presence of Jehovah your God along with your sons, daughters, male and female slaves, the Levites who live in your cities, the foreigners, orphans, and widows who live among you. Enjoy yourselves at the place Jehovah your God will choose as a dwelling for his name.
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.