HEB 7:5

5 For men of the sons of Levi taking priesthood have commandment to take tithes of the people, by the law, that is to say, of their brethren, though also they went out of the loins of Abraham. (For the men of the descendants of Levi who become priests have a command to receive tithes from the people, according to the Law, that is to say, from their brothers, even though they also came from the loins of Abraham.)