Heb Hebrews, chapter Epistle to the Hebrews, chapter 7
Jesus lives eternally as a Supreme Priest to plead with God for us.
Hebrews 7:20-25
However, when he appointed Christ to be a priest, it was by these words that the Psalmist wrote in Scripture:
The Lord has solemnly declared to the Messiah,
—and he will not change his mind—
“You will be a priest forever!”Psa 110:4