And they shall keep all the instruments of the tabernacle of the congregation, and the charge of the children of Israel, to do the service of the tabernacle.(Numbers 3:8)

And thou shalt give the Levites unto Aaron and to his sons: they are wholly given unto him out of the children of Israel.(Numbers 3:9)

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 3:10)

And I, behold, I have taken the Levites from among the children of Israel instead of all the firstborn that openeth the matrix among the children of Israel: therefore the Levites shall be mine;(Numbers 3:12)

Because all the firstborn are mine; for on the day that I smote all the firstborn in the land of Egypt I hallowed unto me all the firstborn in Israel, both man and beast: mine shall they be: I am the LORD.(Numbers 3:13)

And the LORD spake unto Moses in the wilderness of Sinai, saying,(Numbers 3:14)