If a person does not fulfil this duty, he won’t have enough light to see evil and hide from it. Besides, this verse tells us that such a person (he or she is called „simple”) goes ahead and is punished – not by God, but by his own ignorance. Ignorance separates a person from the life of God, because he knows nothing about God’s provision. «..having their understanding darkened, being alienated from the life of God, because of the ignorance that is in them, because of the blindness of their heart» (Ephesians, 4:18).
Because of ignorance human mind is darkened, heart is hardened and he himself is alienated from the life of God.