Hebrews 7
4 Ref Now consider how great this man was, to whom even Abraham, the patriarch, gave a tenth out of the best spoils.
5 Ref They indeed of the sons of Levi who receive the priest's office have a commandment to take tithes of the people according to the law, that is, of their brothers, though these have come out of the loins of Abraham,
6 Ref but he whose genealogy is not counted from them has taken tithes of Abraham, and has blessed him who has the promises.