Hebrews 7:4-8

Now observe how great this man was to whom Abraham, the patriarch, gave a tenth of the choicest spoils.

And those indeed of the sons of Levi who receive the priest’s office have a commandment in the Law to collect a tenth from the people, that is, from their countrymen, although they are descended from Abraham.

But the one whose genealogy is not traced from them collected a tenth from Abraham and blessed the one who had the promises.

But without any dispute the lesser person is blessed by the greater.

In this case mortal men receive tithes, but in that case one receives them, of whom it is witnessed that he lives on.