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

Matthew 13:21
But since he has no root, he remains for only a season. When trouble or persecution comes because of the word, he quickly falls away.

Hebrews 5:6
And in another passage God says: "You are a priest forever in the order of Melchizedek."

Hebrews 7:14
For it is clear that our Lord descended from Judah, a tribe as to which Moses said nothing about priests.

Hebrews 7:16
one who has become a priest not by a law of succession, but by the power of an indestructible life.

And it is yet far more evident: for that after the similitude of Melchisedec there rises another priest,