Deuteronomy 18:5

For the Lord your God has chosen him and his sons from all your tribes, to stand and serve in the name of the Lord forever.

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 bless in His name until this day.

Deuteronomy 17:12

The man who acts presumptuously by not listening to the priest who stands there to serve the Lord your God, nor to the judge, that man shall die; thus you shall purge the evil from Israel.

Exodus 28:1-14

“Then bring near to yourself Aaron your brother, and his sons with him, from among the sons of Israel, to minister as priest to Me—Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.

Numbers 3:10

So you shall appoint Aaron and his sons that they may keep their priesthood, but the layman who comes near shall be put to death.”

Numbers 16:5

and he spoke to Korah and all his company, saying, “Tomorrow morning the Lord will show who is His, and who is holy, and will bring him near to Himself; even the one whom He will choose, He will bring near to Himself.

Numbers 16:9-10

is it not enough for you that the God of Israel has separated you from the rest of the congregation of Israel, to bring you near to Himself, to do the service of the tabernacle of the Lord, and to stand before the congregation to minister to them;

Numbers 17:5-9

It will come about that the rod of the man whom I choose will sprout. Thus I will lessen from upon Myself the grumblings of the sons of Israel, who are grumbling against you.”

Numbers 25:13

and it shall be for him and his descendants after him, a covenant of a perpetual priesthood, because he was jealous for his God and made atonement for the sons of Israel.’”

Treasury of Scripture Knowledge

Summary

For the LORD thy God hath chosen him out of all thy tribes, to stand to minister in the name of the LORD, him and his sons for ever.

Bible References

General references

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 bless in His name until this day.
Deuteronomy 17:12
The man who acts presumptuously by not listening to the priest who stands there to serve the Lord your God, nor to the judge, that man shall die; thus you shall purge the evil from Israel.
Exodus 28:1
“Then bring near to yourself Aaron your brother, and his sons with him, from among the sons of Israel, to minister as priest to Me—Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.
Numbers 3:10
So you shall appoint Aaron and his sons that they may keep their priesthood, but the layman who comes near shall be put to death.”
Numbers 16:5
and he spoke to Korah and all his company, saying, “Tomorrow morning the Lord will show who is His, and who is holy, and will bring him near to Himself; even the one whom He will choose, He will bring near to Himself.
Numbers 17:5
It will come about that the rod of the man whom I choose will sprout. Thus I will lessen from upon Myself the grumblings of the sons of Israel, who are grumbling against you.”
Numbers 25:13
and it shall be for him and his descendants after him, a covenant of a perpetual priesthood, because he was jealous for his God and made atonement for the sons of Israel.’”