But Peter... was a high priest of the "order of Melchizedek."
Jesus is the only great High Priest we need.
His role as High Priest lasts forever.
We don't need human "High Priests" as the role of a priest is to bring God to mankind, a mediator, and an officiator of the sacrifices. But as there are no more sacrifices, Jesus fulfils the role of High Priest in an ongoing and eternal way just as he fulfils the sacrifices in an ongoing and eternal way.
Hebrews 7
14 For it is clear that our Lord descended from Judah, and in regard to that tribe Moses said nothing about priests. 15 And what we have said is even more clear if another priest like Melchizedek appears, 16 one who has become a priest not on the basis of a regulation as to his ancestry but on the basis of the power of an indestructible life. 17 For it is declared:
“You are a
priest forever,
in the order of Melchizedek.”
18 The former regulation is set aside because it was weak and useless 19 (for the law made nothing perfect), and a better hope is introduced, by which we draw near to God.
20 And it was not without an oath! Others became priests without any oath, 21 but he became a priest with an oath when God said to him:
“The Lord has sworn
and will not change his mind:
‘
You are a priest forever.’”
8 Now the main point of what we are saying is this: We do have such a high priest, who sat down at the right hand of the throne of the Majesty in heaven, 2 and who serves in the sanctuary, the true tabernacle set up by the Lord, not by a mere human being.... 8 But in fact the ministry Jesus has received is as
superior to theirs as the covenant of which he is mediator is superior to the old one, since the new covenant is established on
better promises.
So there's one high priest. But Hebrews 8 also talks about ALL Christians being priests to each other. So one High Priest, but we're all priests.
I'm as much a priest as the Pope is.