Matthew 6:22, Matthew 6:23 Niv

1 John 2:11 NIV
But anyone who hates a brother or sister is in the darkness and walks around in the darkness. They do not know where they are going, because the darkness has blinded them.

Jeremiah 4:22 NIV
“My people are fools; they do not know me. They are senseless children; they have no understanding. They are skilled in doing evil; they know not how to do good.”

Luke 11:34-36 NIV
Your eye is the lamp of your body. When your eyes are healthy, your whole body also is full of light. But when they are unhealthy, your body also is full of darkness. See to it, then, that the light within you is not darkness. Therefore, if your whole body is full of light, and no part of it dark, it will be just as full of light as when a lamp shines its light on you.”