Hebrews 7:4-7

Consider how great this man was The greatness of Melchisedec is described in all the preceding and following particulars. But the most manifest proof of it was, that Abraham gave him tithes as a priest of God, and a superior; though he was himself a patriarch, greater than a king, and a progenitor of many kings. The sons of Levi take tithes of their brethren Sprung from Abraham as well as themselves. The Levites, therefore, are greater than they; but the priests are greater than the Levites; the patriarch Abraham than the priests, and Melchisedec than him. But he whose descent is not counted from them From that people who come out of the loins of Abraham, not only received tithes of Abraham, but blessed him Another proof of Melchisedec's superiority; even him that had the promises With whom God made the covenant of grace, as with the Father of all the blessed seed. Thus Galatians 3:16: To Abraham and his seed were the promises made. And without all contradiction Without all question; the less is blessed authoritatively of the better Or greater; that is, when a man does, in God's name and stead, and by his authority, declare and pronounce another to be blessed, he that gives the blessing is, in that respect, greater than he who receives it.