11 Thus if perfection was through the Levitical priesthood, for on the basis of it the people received the law, what further need is there for another priest to arise according to the order of Melchizedek and not said to be according to the order of Aaron?
12 For when the priesthood changes, of necessity there is a change of the law also.
13 For the one about whom these things are spoken belongs to another tribe from which no one has officiated at the altar.
14 For it is evident that our Lord is a descendant of Judah, a tribe with reference to which Moses said nothing concerning priests.
15 And it is still more clear, if another priest according to the likeness of Melchizedek arises,
16 who has become a priest not according to a law of physical requirement, but according to the power of an indestructible life.
17 For it is testified, “You are a priest forever according to the order of Melchizedek.”