Deuteronomy 18:6-8

6“So if a Levite comes from any of your gates, from where he dwells among all Israel, and comes with all the desire of his mind to the place which the Lord chooses,

7then he may serve in the name of the Lord his God as all his brethren the Levites do, who stand there before the Lord.

8They shall have equal portions to eat, besides what comes from the sale of his inheritance.