'Priest Forever' in the Bible

where Jesus has entered [in advance] as a forerunner for us, having become a High Priest forever according to the order of Melchizedek.

For it is attested [by God] of Him,“You (Christ) are a Priest foreverAccording to the order of Melchizedek.”

(for those Levites who formerly became priests [received their office] without [its being confirmed by the taking of] an oath, but this One [was designated] with an oath through the One who said to Him,“The Lord has swornAnd will not change His mind or regret it,‘You (Christ) are a Priest forever’”).