Hebrews 7:18

This is yet more abundantly evident, if after the likeness of Melchizedek there arises another priest,

who has been made, not after the law of a fleshly commandment, but after the power of an endless life;

for it is testified,

“You are a priest forever,

according to the order of Melchizedek.”

(for the law made nothing perfect), and a bringing in of a better hope, through which we draw near to God.

Inasmuch as he was not made priest without the taking of an oath

(for they indeed have been made priests without an oath), but he with an oath by him that says of him,

“The Lord swore and will not change his mind,

‘You are a priest forever,

according to the order of Melchizedek.’”