KJV: And verily they that are of the sons of Levi, who receive the office of the priesthood, have a commandment to take tithes of the people according to the law, that is, of their brethren, though they come out of the loins of Abraham:
NASB: And those indeed of the sons of Levi who receive the priest's office have commandment in the Law to collect a tenth from the people, that is, from their brethren, although these are descended from Abraham.