GOD'S WORD® Translation
They can't understand because they are in the dark. They are excluded from the life that God approves of because of their ignorance and stubbornness.

American Standard Version
being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their heart;

Berean Study Bible
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.

Douay-Rheims Bible
Having their understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their hearts.

English Revised Version
being darkened in their understanding, alienated from the life of God because of the ignorance that is in them, because of the hardening of their heart;

King James Bible
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:

World English Bible
being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their hearts;

Young's Literal Translation
being darkened in the understanding, being alienated from the life of God, because of the ignorance that is in them, because of the hardness of their heart,

Ephesians 4:18 Additional Translations ...