Numbers 18:3-7 ▼

3 And they shall attend to your duties and to all the duties of the Tent; but they must not come near to the furnishings of the sanctuary or the altar, or both they and you will die.

4 They are to join you and attend to the duties of the Tent of Meeting, doing all the work at the Tent; but no outsider may come near you.

5 And you shall attend to the duties of the sanctuary and of the altar, so that wrath may not fall on the Israelites again.

6 Behold, I Myself have selected your fellow Levites from the Israelites as a gift to you, dedicated to the LORD to perform the service for the Tent of Meeting.

7 But only you and your sons shall attend to your priesthood for everything concerning the altar and what is inside the veil, and you are to perform that service. I am giving you the work of the priesthood as a gift, but any outsider who comes near the sanctuary must be put to death.”