For My people are foolish; they have not known Me; they are stupid sons, and they have no understanding. They are wise to do evil, but to do good they have no knowledge.
The light of the body is the eye. Therefore when your eye is sound, your whole body also is full of light. But when your eye is evil, your body also is full of darkness.
And He said, To you it is given to know the mysteries of the kingdom of God. But to others I speak in parables, so that seeing they might not see and hearing they might not understand.
But the natural man does not receive the things of the Spirit of God, for they are foolishness to him; neither can he know them, because they are spiritually discerned.
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.