Hebrews 7:11-14

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.