Numbers 3:10; Numbers 16:10; Numbers 18:7; Numbers 25:13

Numbers 3:10

10 And thou shalt appoint Aaron and his sons, and they shall wait on their priest's office: and the stranger that cometh nigh shall be put to death.

Numbers 16:10

10 And he hath brought thee near to him, and all thy brethren the sons of Levi with thee: and seek ye the priesthood also?

Numbers 18:7

7 Therefore thou and thy sons with thee shall keep your priest's office for every thing of the altar, and within the vail; and ye shall serve: I have given your priest's office unto you as a service of gift: and the stranger that cometh nigh shall be put to death.

Numbers 25:13

13 And he shall have it, and his seed after him, even the covenant of an everlasting priesthood; because he was zealous for his God, and made an atonement for the children of Israel.