Numbers 18:3-5

Young's Literal Translation

³ `And they have kept thy charge, and the charge of all the tent; only, unto the vessels of the sanctuary and unto the altar they do not come near, and they die not, either they or you;

⁴ and they have been joined unto thee, and have kept the charge of the tent of meeting, for all the service of the tent; and a stranger doth not come near unto you;

⁵ and ye have kept the charge of the sanctuary, and the charge of the altar, and there is no more wrath against the sons of Israel.