For the law was administered without an oath and made nothing perfect, but was only the bringing in of a better hope; by the which we draw nigh unto God.

 Inasmuch as this high priest was not without an oath, by so much was Jesus made the surety of a better testament.

 (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 forever after the order of Melchizedek;)