Carnal (σαρκινης). "Fleshen" as in 1. Corinthians 3:1, not σαρκικης (fleshlike, 1. Corinthians 3:3). The Levitical priests became so merely by birth.

Of an endless life (ζωης ακαταλυτου). Late compound (alpha privative and verbal adjective from καταλυω, to dissolve, as in 2. Corinthians 4:1), indissoluble. Jesus as priest lives on forever. He is Life.