Hebrews 7:12-21, 25, 27

And furthermore, for God to send a new and different rank of priest, meant a new law would have had to be instituted even to allow it! Yet the One these things all point to, was from a different tribe and no one from that tribe ever officiated at God’s altar, for we all know that our Lord didn’t descend from the tribe of Levi, but shined from the tribe of Judah. And Moses himself never said anything of a priest in connection with Judah’s tribe. And all this is made even clearer if there was another King-Priest raised up with the rank of Melchizedek. This King-Priest did not arise because of a genealogical right under the law to be a priest, but by the power of an indestructible, resurrection life! For it says in the Psalms, You are like Melchizedek, a King-Priest forever! The old order of priesthood has been set aside as weak and powerless. For the law has never made anyone perfect, but in its place is a far better hope which gives us confidence to experience intimacy with God! And he confirmed it to us with his solemn vow. For the former priests took their office without an oath, but with Jesus, God affirmed his royal-priesthood with his promise, saying

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.

Unlike the former high priests, he is not compelled to offer daily sacrifices. They had to bring a sacrifice first for their own sins, then for the sins of the people, but he finished the sacrificial system, once and for all, when he offered himself.