Clearly you are an epistle of Christ, ministered by us,
Written not with ink but by the Spirit of the living God,
Not on tablets of stone but on tablets of flesh, that is, of the heart.
(2 Corinthians 3:3) New King James Version

Jesus holds His priesthood permanently and without change, because He lives on forever.
25 Therefore He is able also to save forever (completely, perfectly, for eternity) those who come to God through Him, since He always lives to intercede and intervene on their behalf [with God].
(Hebrews 7:24-25) Amplified Version