Deuteronomy 18:5
For the LORD thy God hath chosen him out of all thy tribes to stand and to minister in the name of the LORD: both him and his sons forever.
Deuteronomy 10:8
And the same season the LORD separated the tribe of Levi to bear the ark of the covenant of the LORD and to stand before the LORD, and to minister unto him and to bless in his name unto this day.
Deuteronomy 17:12
And that man that will do presumptuously, so that he will not hearken unto the priest that standeth there to minister unto the LORD thy God or unto the judge, shall die: and so thou shalt put away evil from Israel.
Exodus 28:1-14
And take thou unto thee, Aaron thy brother, and his sons with him, from among the children of Israel, that he may minister unto me: both Aaron, Nadab, Abihu, Eleazar and Ithamar, Aaron's sons.
Numbers 3:10
And thou shalt appoint Aaron and his sons to wait on their priests' office: and the stranger that cometh nigh shall die for it."
Numbers 16:5
and spake unto Korah and unto all his company, saying, "Tomorrow the LORD will show who is his and who is holy, and will take them unto him, and whomsoever he hath chosen, he will cause to come to him.
Numbers 16:9-10
Seemeth it but a small thing unto you, that the God of Israel hath separated you from the multitude of Israel to bring you to him, to do the service of the dwelling place of the LORD, and to stand before the people to minister unto them?
Numbers 17:5-9
And his rod whom I chose, shall blossom: So I will make cease from me the grudgings of the children of Israel which they grudge against you."
Numbers 25:13
and he shall have it and his seed after him, even the covenant of the priest's office forever, because he was jealous for his God's sake and made an atonement for the children of Israel.'"