For my people [is] foolish, they have not known me; they [are] drunken children, and they have none understanding: they [are] wise to do evil, but to do good they have no knowledge.
Having the understanding darkened, being alienated from the life of God-The Father through the ignorance that is in them, because of the blindness of their heart:
But the natural man receives not the things of the Spirit [Ruach] of God-The Father: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.
And he said, Unto you it is given to know the mysteries of the kingdom of God-Theos: but to others in parables; that seeing they might not see, and hearing they might not understand.
The light of the body is the eye: therefore when youri eye is single, youri whole body also is full of light; but when [youri eye] is evil, youri body also [is] full of darkness.