Hebrews 7:15
And this is even clearer if another priest like Melchizedek arises,
Hebrews 7:3
He was without a father, or mother or a list of ancestors [i.e., there was no record of his family tree] and no [record of his] birth or death. Like the Son of God, he [appeared to] remain a priest perpetually.
Hebrews 7:11
So, if perfection [i.e., a right relationship with God] could have been attained through the Levitical priesthood, (for under it people had received the law of Moses), what further need would there have been for another priest to arise, according to the order of Melchizedek, who was not considered "according to the order of Aaron"?
Hebrews 7:17-21
For it is declared [about Jesus in the Scriptures, Psa. 110:4], "You are a priest forever according to the order of Melchizedek."