Hebrews 7:12-17

7:12 For when the priesthood changes, a change in the law must come as well. 7:13 Yet the one these things are spoken about belongs to a different tribe, and no one from that tribe has ever officiated at the altar. 7:14 For it is clear that our Lord is descended from Judah, yet Moses said nothing about priests in connection with that tribe. 7:15 And this is even clearer if another priest arises in the likeness of Melchizedek, 7:16 who has become a priest not by a legal regulation about physical descent but by the power of an indestructible life. 7:17 For here is the testimony about him:You are a priest forever in the order of Melchizedek.”