Hebrews 7:21-23

21st Century King James Version

²¹ (for those priests were made without an oath, but He with an oath by Him who said unto Him: “The Lord swore and will not repent, ‘Thou art a priest for ever after the order of Melchizedek.’”),

²² by so much more was Jesus made a surety of a better testament.

²³ And those priests truly were many, because they were not suffered to continue by reason of death;