Hebrews 7:5-7

Common(i) 5 And those descendants of Levi who receive the priestly office have a commandment in the law to take a tenth from the people, that is, from their brethren, though these also are descended from Abraham. 6 But this man whose genealogy is not derived from them received a tenth from Abraham and blessed him who had the promises. 7 And without dispute the lesser person is blessed by the greater.