also said in another passage, You are a priest forever in the order of Melchizedek.

and He was declared by God a high priest in the order of Melchizedek.

Jesus has entered there on our behalf as a forerunner, because He has become a high priest forever in the order of Melchizedek.

For this Melchizedek—

King of Salem, priest of the Most High God,
who met Abraham and blessed him
as he returned from defeating the kings,

for he was still within his ancestor when Melchizedek met him.

If then, perfection came through the Levitical priesthood (for under it the people received the law), what further need was there for another priest to appear, said to be in the order of Melchizedek and not in the order of Aaron?

And this becomes clearer if another priest like Melchizedek appears,

For it has been testified:

You are a priest forever
in the order of Melchizedek.