Numbers 3:8-10

Darby Translation

⁸ And they shall keep all the utensils of the tent of meeting, and the charge of the children of Israel, to do the service of the tabernacle.

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

¹⁰ And Aaron and his sons shalt thou appoint that they may attend to their priest's office; and the stranger that cometh near shall be put to death.