Numbers 18:20–21; Numbers 18:26

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

21 zTo the Levites I have given every tithe in Israel for an inheritance, in return for their service that they do, their service in the tent of meeting,

26 Moreover, you shall speak and say to the Levites, When you take from the people of Israel the tithe that I have given you from them for your inheritance, then you shall present a contribution from it to the Lord, ga tithe of the tithe.