Numbers 18:3–6

3 They shall keep guard over you and uover the whole tent, vbut shall not come near to the vessels of the sanctuary or to the altar wlest they, and you, die. 4 They shall join you and keep guard over the tent of meeting for all the service of the tent, xand no outsider shall come near you. 5 And you shall ykeep guard over the sanctuary and over the altar, zthat there may never again be wrath on the people of Israel. 6 aAnd behold, I have taken your brothers the Levites from among the people of Israel. bThey are a gift to you, given to the Lord, to do the service of the tent of meeting.