Exodus 13:2
“Consecrate to Me every firstborn male. The firstborn from every womb among the Israelites belongs to Me, both of man and beast.”

Exodus 13:12
you are to present to the LORD the firstborn male of every womb. All the firstborn males of your livestock belong to the LORD.

Exodus 13:15
And when Pharaoh stubbornly refused to let us go, the LORD killed every firstborn in the land of Egypt, both of man and beast. This is why I sacrifice to the LORD the firstborn male of every womb, but I redeem all the firstborn of my sons.’

Numbers 8:16-18
For the Levites have been wholly given to Me from among the sons of Israel. I have taken them for Myself in place of all who come first from the womb, the firstborn of all the sons of Israel. / For every firstborn male in Israel is Mine, both man and beast. I set them apart for Myself on the day I struck down all the firstborn in the land of Egypt. / But I have taken the Levites in place of all the firstborn among the sons of Israel.

Numbers 18:6
Behold, I Myself have selected your fellow Levites from the Israelites as a gift to you, dedicated to the LORD to perform the service for the Tent of Meeting.

Numbers 18:15-16
The firstborn of every womb, whether man or beast, that is offered to the LORD belongs to you. But you must surely redeem every firstborn son and every firstborn male of unclean animals. / You are to pay the redemption price for a month-old male according to your valuation: five shekels of silver, according to the sanctuary shekel, which is twenty gerahs.

Deuteronomy 15:19
You must set apart to the LORD your God every firstborn male produced by your herds and flocks. You are not to put the firstborn of your oxen to work, nor are you to shear the firstborn of your flock.

Deuteronomy 18:1-2
The Levitical priests—indeed the whole tribe of Levi—shall have no portion or inheritance with Israel. They are to eat the food offerings to the LORD; that is their inheritance. / Although they have no inheritance among their brothers, the LORD is their inheritance, as He promised them.

1 Samuel 1:28
I now dedicate the boy to the LORD. For as long as he lives, he is dedicated to the LORD.” So they worshiped the LORD there.

1 Chronicles 23:13
The sons of Amram: Aaron and Moses. Aaron and his descendants were set apart forever to consecrate the most holy things, to burn incense before the LORD, to minister before Him, and to pronounce blessings in His name forever.

Nehemiah 10:36
And we will bring the firstborn of our sons and our livestock, as it is written in the Law, and will bring the firstborn of our herds and flocks to the house of our God, to the priests who minister in the house of our God.

Luke 2:23
(as it is written in the Law of the Lord: “Every firstborn male shall be consecrated to the Lord”),

Hebrews 7:5
Now the law commands the sons of Levi who become priests to collect a tenth from the people—that is, from their brothers—though they too are descended from Abraham.

Hebrews 7:11
Now if perfection could have been attained through the Levitical priesthood (for on this basis the people received the law), why was there still need for another priest to appear—one in the order of Melchizedek and not in the order of Aaron?

Hebrews 7:28
For the law appoints as high priests men who are weak; but the oath, which came after the law, appointed the Son, who has been made perfect forever.