The lamp of the body is the eye. Therefore, when your eye is clear, your whole body also is full of light. But when your eye is evil, your body also is dark.
And He said, "To you it has been given to know the mysteries of the kingdom of God, but to the rest they are in parables, that 'Seeing they may not see, and hearing they may not understand.'
But the natural man does not receive the things of the Spirit of God, for they are foolishness to him; nor can he know them, because they are spiritually discerned.
having been darkened in understanding, being estranged from the life of God, because of the ignorance which is in them, because of the hardness of their heart;