Hebrews 7:22-25

So all of this magnifies the truth that we have a superior covenant with God than what they experienced, for Jesus himself is its guarantor! As additional proof, we know there were many priests under the old system, for they eventually died and their office had to be filled by another. But Jesus permanently holds his priestly office, since he lives forever and will never have a successor! So he is able to save fully from now throughout eternity, everyone who comes to God through him, because he lives to pray continually for them.