(For those priests were made without an oath; but this with an oath by him that said unto him,
The Lord swore and will not change, you are a priest forever after the order of Melchizedek:
)
All Commentaries on Hebrews 7:21 Go To Hebrews 7
The Apostolic Constitutions
AD 375
Whence also the prophet says, The Lord hath sworn, and will not repent: Thou art a priest for ever, after the order of Melchizedec.