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 13:12-15
you are to present to the LORD the firstborn male of every womb. All the firstborn males of your livestock belong to the LORD. / You must redeem every firstborn donkey with a lamb, and if you do not redeem it, you are to break its neck. And every firstborn of your sons you must redeem. / In the future, when your son asks you, ‘What does this mean?’ you are to tell him, ‘With a mighty hand the LORD brought us out of Egypt, out of the house of slavery. ...

Numbers 3:12-13
“Behold, I have taken the Levites from among the children of Israel in place of every firstborn Israelite from the womb. The Levites belong to Me, / for all the firstborn are Mine. On the day I struck down every firstborn in the land of Egypt, I consecrated to Myself all the firstborn in Israel, both man and beast. They are Mine; I am the LORD.”

Numbers 3:45
“Take the Levites in place of all the firstborn of Israel, and the livestock of the Levites in place of their livestock. The Levites belong to Me; I am the LORD.

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.

Deuteronomy 10:8
At that time the LORD set apart the tribe of Levi to carry the ark of the covenant of the LORD, to stand before the LORD to serve Him, and to pronounce blessings in His name, as they do to this day.

Deuteronomy 18:1-5
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. / This shall be the priests’ share from the people who offer a sacrifice, whether a bull or a sheep: the priests are to be given the shoulder, the jowls, and the stomach. ...

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.

1 Chronicles 23:32
So the Levites were to carry out the responsibilities for the Tent of Meeting and the Holy Place, and, under their brothers the descendants of Aaron, the service of the house of the LORD.

Hebrews 7:11-12
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? / For when the priesthood is changed, the law must be changed as well.

Hebrews 7:23-28
Now there have been many other priests, since death prevented them from continuing in office. / But because Jesus lives forever, He has a permanent priesthood. / Therefore He is able to save completely those who draw near to God through Him, since He always lives to intercede for them. ...

Hebrews 8:3-6
And since every high priest is appointed to offer both gifts and sacrifices, it was necessary for this One also to have something to offer. / Now if He were on earth, He would not be a priest, since there are already priests who offer gifts according to the law. / The place where they serve is a copy and shadow of what is in heaven. This is why Moses was warned when he was about to build the tabernacle: “See to it that you make everything according to the pattern shown you on the mountain.” ...

Hebrews 9:6-10
When everything had been prepared in this way, the priests entered regularly into the first room to perform their sacred duties. / But only the high priest entered the second room, and then only once a year, and never without blood, which he offered for himself and for the sins the people had committed in ignorance. / By this arrangement the Holy Spirit was showing that the way into the Most Holy Place had not yet been disclosed as long as the first tabernacle was still standing. ...

Hebrews 9:23-24
So it was necessary for the copies of the heavenly things to be purified with these sacrifices, but the heavenly things themselves with better sacrifices than these. / For Christ did not enter a man-made copy of the true sanctuary, but He entered heaven itself, now to appear on our behalf in the presence of God.

Hebrews 10:11-14
Day after day every priest stands to minister and to offer again and again the same sacrifices, which can never take away sins. / But when this Priest had offered for all time one sacrifice for sins, He sat down at the right hand of God. / Since that time, He waits for His enemies to be made a footstool for His feet, ...