Numbers 18:21; Numbers 18:24

21 "To the sons of Levi, behold, I have given all the tithe in Israel for an inheritance, in return for their service which they perform, the service of the tent of meeting.

24 "For the tithe of the sons of Israel, which they offer as an offering to the LORD , I have given to the Levites for an inheritance; therefore I have said concerning them, 'They shall have no inheritance among the sons of Israel.' "