Psalms 110:4

110:4 The Lord makes this promise on oath and will not revoke it:

“You are an eternal priest after the pattern of Melchizedek.”

Hebrews 5:6

5:6 as also in another place God says, “You are a priest forever in the order of Melchizedek.”

Hebrews 5:10

5:10 and he was designated by God as high priest in the order of Melchizedek.

Hebrews 6:20--7:1

6:20 where Jesus our forerunner entered on our behalf, since he became a priest forever in the order of Melchizedek.

The Nature of Melchizedek’s Priesthood

7:1 Now this Melchizedek, king of Salem, priest of the most high God, met Abraham as he was returning from defeating the kings and blessed him.

Hebrews 7:3

7:3 Without father, without mother, without genealogy, he has neither beginning of days nor end of life but is like the son of God, and he remains a priest for all time.

Hebrews 7:10-22

7:10 For he was still in his ancestor Abraham’s loins when Melchizedek met him.

Jesus and the Priesthood of Melchizedek

7:11 So if perfection had in fact been possible through the Levitical priesthood – for on that basis the people received the law – what further need would there have been for another priest to arise, said to be in the order of Melchizedek and not in Aaron’s order? 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.” 7:18 On the one hand a former command is set aside because it is weak and useless, 7:19 for the law made nothing perfect. On the other hand a better hope is introduced, through which we draw near to God. 7:20 And since this was not done without a sworn affirmation – for the others have become priests without a sworn affirmation, 7:21 but Jesus did so with a sworn affirmation by the one who said to him, “The Lord has sworn and will not change his mind, ‘You are a priest forever’” – 7:22 accordingly Jesus has become the guarantee of a better covenant.