Numbers 18:3-5

Holman Christian Standard Bible

³ They are to perform duties for you and for the whole tent. They must not come near the sanctuary equipment or the altar; otherwise, both they and you will die. ⁴ They are to join you and guard the tent of meeting, doing all the work at the tent, but no unauthorized person may come near you.

⁵ “You are to guard the sanctuary and the altar so that wrath may not fall on the Israelites again.^(A)