Numbers 18:20-24

²⁰And the Lord said to Aaron, You shall have no inheritance in their land, neither shall you have any portion among them; for I am your portion and your inheritance in the midst of the children of Israel.

²¹And, behold, I have given to the sons of Levi every tithe in Israel for an inheritance for their services, whenever they perform ministry in the tabernacle of witness.

²²And the children of Israel shall no more draw near to the tabernacle of witness to incur fatal guilt.

²³And the Levite himself shall perform the service of the tabernacle of witness; and they shall bear their iniquities, it is a perpetual statute throughout their generations; and in the midst of the children of Israel they shall not receive an inheritance.

²⁴Because I have given as a distinct portion to the Levites for an inheritance the tithes of the children of Israel, whatever they shall offer to the Lord; therefore I said to them, In the midst of the children of Israel they shall have no inheritance.