Hebrews 7:3, 8, 23-25

without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like the Son of God, remains a priest continually.

Here mortal men receive tithes, but there he receives them, of whom it is witnessed that he lives.

Also there were many priests, because they were prevented by death from continuing. But He, because He continues forever, has an unchangeable priesthood. Therefore He is also able to save to the uttermost those who come to God through Him, since He always lives to make intercession for them.