Deuteronomy 18:5
For the LORD your God has chosen him out of all your tribes to stand and minister in the name of the LORD, him and his sons for all time.
Deuteronomy 10:8
At that time the LORD set apart the tribe of Levi to carry the ark of the covenant of the LORDto stand before the LORD to minister to him and to bless in his name, to this day.
Deuteronomy 17:12
The man who acts presumptuously by not obeying the priest who stands to minister there before the LORD your God, or the judge, that man shall die. So you shall purge the evil from Israel.
Exodus 28:1-14
"Then bring near to you Aaron your brother, and his sons with him, from among the people of Israel, to serve me as priests--Aaron and Aaron's sons, Nadab and Abihu, Eleazar and Ithamar.
Numbers 3:10
And you shall appoint Aaron and his sons, and they shall guard their priesthood. But if any outsider comes near, he shall be put to death."
Numbers 16:5
and he said to Korah and all his company, "In the morning the LORD will show who is his, and who is holy, and will bring him near to him. The one whom he chooses he will bring near to him.
Numbers 16:9-10
is it too small a thing for you that the God of Israel has separated you from the congregation of Israel, to bring you near to himself, to do service in the tabernacle of the LORD and to stand before the congregation to minister to them,
Numbers 17:5-9
And the staff of the man whom I choose shall sprout. Thus I will make to cease from me the grumblings of the people of Israel, which they grumble against you."
Numbers 25:13
and it shall be to him and to his descendants after him the covenant of a perpetual priesthood, because he was jealous for his God and made atonement for the people of Israel.'"