Melchisedec

Then Melchizedek king of Salem brought out bread and wine—since he was priest of God Most High—

The LORD has sworn and will not change His mind: “You are a priest forever in the order of Melchizedek.”

And in another passage God says: “You are a priest forever in the order of Melchizedek.”

and was designated by God as high priest in the order of Melchizedek.

where Jesus our forerunner has entered on our behalf. He has become a high priest forever in the order of Melchizedek.

This Melchizedek was king of Salem and priest of God Most High. He met Abraham returning from the slaughter of the kings and blessed him,

For when Melchizedek met Abraham, Levi was still in the loin of his ancestor.

Now if perfection could have been attained through the Levitical priesthood (for on this basis the people received the law), why was there still need for another priest to appear—one in the order of Melchizedek and not in the order of Aaron?

And this point is even more clear if another priest like Melchizedek appears,

For it is testified: “You are a priest forever in the order of Melchizedek.”

but Jesus became a priest with an oath by the One who said to Him: “The Lord has sworn and will not change His mind: ‘You are a priest forever.’”