Numbers 18:20-22

American Standard Version

²⁰ And Jehovah said unto Aaron, Thou shalt have no inheritance in their land, neither shalt thou have any portion among them: I am thy portion and thine inheritance among the children of Israel.

²¹ And unto the children of Levi, behold, I have given all the tithe in Israel for an inheritance, in return for their service which they serve, even the service of the tent of meeting. ²² And henceforth the children of Israel shall not come nigh the tent of meeting, lest they bear sin, and die.