Deuteronomy 18:5
For Jehovah your God has chosen him out of all your tribes, to stand to minister in the name of Jehovah, him and his sons forever.
Deuteronomy 10:8
At that time Jehovah separated the tribe of Levi to carry the ark of the covenant of Jehovah, to stand before Jehovah to minister to Him, and to bless in His name, until today.
Deuteronomy 17:12
And the man that acts proudly and will not listen to the priest who stands to minister there before Jehovah your God, or to the judge, even that man shall die. And you shall put away the evil from Israel.
Exodus 28:1-14
And you shall take to yourself Aaron your brother, and his sons with him, from among the sons of Israel, so that he may minister to Me in the priest's office: 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 wait on their priest's office. And the stranger who comes near shall be put to death.
Numbers 16:5
And he spoke to Korah and to all his company, saying, Even tomorrow Jehovah will show who are His, and him who is holy, and will cause him to come near to Him; even him whom He has chosen, He will cause to come near to Him.
Numbers 16:9-10
is it only a small thing to you that the God of Israel has separated you from the congregation of Israel, to bring you near Himself to do the service of the tabernacle of Jehovah and to stand before the congregation to minister to them?
Numbers 17:5-9
And it shall be, the rod of the man whom I shall choose shall blossom. And I will make to cease from Me the murmurings of the sons of Israel by which they murmur against you.
Numbers 25:13
And he shall have it, and his seed after him, the covenant of an everlasting priesthood, because he was zealous for his God, and made an atonement for the sons of Israel.