Hebrews 7:5-9

5And 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;

6but he whose genealogy is not derived from them received tithes from Abraham and blessed him who had the promises.

7Now beyond all contradiction the lesser is blessed by the better.

8Here mortal men receive tithes, but there he receives them, of whom it is witnessed that he lives.

9Even Levi, who receives tithes, paid tithes through Abraham, so to speak,