V. 21.— (For those priests were made without an oath; but this with an oath by him that said unto him, The Lord sware and will not repent, Thou art a priest for ever after the order of Melchisedec.). This is a parenthesis, and contains a proof of the superiority of the priesthood of Christ from the Levitical priesthood, which was made without an oath, because it was only temporary; but the priesthood of Christ with an oath, which rendered it, and, consequently, the covenant with which it stood connected, everlasting.