Moreover, it is not without an oath. For certainly, the others were made priests without an oath.
He has created a memorial to his wonders; he is a merciful and compassionate Lord.
But as for you and your sons: guard the priesthood. For all that pertains to the service of the altar and of what is beyond the veil shall be exercised by the priests. If any outsider will approach, he shall be killed."
And similarly, he says in another place: "You are a priest forever, according to the order of Melchizedek."
For the law led no one to perfection, yet truly it introduced a better hope, through which we draw near to God.
But this man was made a priest with an oath, by the One who said to him: "The Lord has sworn and he will not repent. You are a priest forever."