Hebrews 7:5

5 And indeed those who are of the sons of Levi, who receive the priesthood, have a commandment to receive tithes from the people according to the law, that is, from their brethren, though they have come from the loins of Abraham;

Hebrews 7:5 In-Context

3 without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like the Son of God, remains a priest continually.
4 Now consider how great this man was, to whom even the patriarch Abraham gave a tenth of the spoils.
5 And indeed those who are of the sons of Levi, who receive the priesthood, have a commandment to receive tithes from the people according to the law, that is, from their brethren, though they have come from the loins of Abraham;
6 but he whose genealogy is not derived from them received tithes from Abraham and blessed him who had the promises.
7 Now beyond all contradiction the lesser is blessed by the better.
Scripture taken from the New King James Version. Copyright © 1982 by Thomas Nelson, Inc. Used by permission. All rights reserved.