But the ministry Jesus has received is as superior to [those who served as priests in Old Testament times,] as the covenant of which he is mediator is superior to the old one, and it is founded on better promises. —Hebrews 8:6.
The Old Testament is a beautiful covenant of love, as God redeems fallen humanity and sets in motion his promises and plans for grace to bring to us Jesus through the descendants of Abraham. But as powerful as that old covenant was, we have come to a superior covenant. It is far superior to theirs. Why? The mediator of this new covenant is Jesus, who is a better priest and the perfect sacrifice and guarantor of God’s great promises coming to his people and the lost world!