Hebrews 7:11-18

11Now if perfection came through the Levitical priesthood (for on the basis of it the people received the law), what further need was there for another priest to appear, said to be according to the order of Melchizedek and not according to the order of Aaron?

12For when there is a change of the priesthood, there must be a change of law as well.

13For the one these things are spoken about belonged to a different tribe. No one from it has served at the altar.

14Now it is evident that our Lord came from Judah, and Moses said nothing about that tribe concerning priests.

15And this becomes clearer if another priest like Melchizedek appears,

16who did not become a priest based on a legal regulation about physical descent but based on the power of an indestructible life.

17For it has been testified: You are a priest forever according to the order of Melchizedek.

18So the previous command is annulled because it was weak and unprofitable