Parallel
Ephesians 4:18
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness (note: Or, hardness) of their heart:
They are darkened in their understanding and alienated from the life of God because of the ignorance that is in them due to the hardness of their hearts.