King James Version (KJV) - Ephesians 4:18 >

Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart:

Berean Study Bible (BSB) - Ephesians 4:18 >

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.