What does the Bible say about the unchangeable priesthood of Christ?

The epistle to the Hebrews emphasizes that Christ has an unchangeable priesthood, differing from the ancient Levitical priests who were subject to death and replaced continually. Hebrews 7:24 states, 'But this man, because he continueth ever, hath an unchangeable priesthood.' This permanence is crucial because it secures the salvation of His followers; He is always available to intercede for them, as seen in Hebrews 7:25, 'Wherefore he is able also to save them to the uttermost that come unto God by him.' The stability and assurance found in Christ’s unchangeable priesthood provide believers with the confidence of an eternal relationship with God.