Numbers 18:22-25

²²Henceforth the children of Israel shall not come near the Tent of Meeting, lest they bear sin, and die.

²³But the Levites shall do the service of the Tent of Meeting, and they shall bear their iniquity. It shall be a statute forever throughout your generations. Among the children of Israel, they shall have no inheritance.

²⁴For the tithe of the children of Israel, which they offer as a wave offering to Yahweh, I have given to the Levites for an inheritance. Therefore I have said to them, ‘Among the children of Israel they shall have no inheritance.’”

²⁵Yahweh spoke to Moses, saying,