Hebrews 7:5; Hebrews 7:8; Hebrews 7:9

5 And those descendants of Levi who receive the priestly office have a commandment in the law to take tithes from the people, that is, from their brothers, though these also are descended from Abraham.

8 In the one case tithes are received by mortal men, but in the other case, by one of whom it is testified that he lives.

9 One might even say that Levi himself, who receives tithes, paid tithes through Abraham,