CLV(i)
3 They will keep guard of you and guard of the entire tent; only to the furnishings of the holy place and to the altar they shall not come near so that they may not die, both they and you.
4 They will be obligated to you and will keep guard of the tent of appointment for all the service of the tent. Yet no alien may come near to you.
5 You will keep guard of the holy place and guard of the altar so that no more wrath shall come on the sons of Israel.