Numbers 18:21; Numbers 18:24

21 "To 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,

24 For the tithe of the people of Israel, which they present as a contribution to the LORD, I have given to the Levites for an inheritance. Therefore I have said of them that they shall have no inheritance among the people of Israel."