Hebrews 7:15
And it is still more overwhelmingly clear, since a different priest in the likeness of Melchizedek is appointed,
Hebrews 7:3
with no father, no mother, no ancestry; no beginning to his days, no end to his life, but, like the Son of God, as priest continues on and on with no successor.
Hebrews 7:11
Now if perfection had been reached through the Levitical priesthood -- for on it as a basis even the law was enacted for the people-- what further need would there have been of appointing a different priest, with the rank of Melchizedek, instead of designating one with the rank of Aaron?
Hebrews 7:17-21
For the Scripture bears witness: "You are a priest forever, with the rank of Melchizedek."