Luke 11:34-36

CAB(i) 34 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. 35 Therefore take heed that the light which is in you is not darkness. 36 Therefore if your whole body is full of light, not having any part dark, the whole body will be full of light, as when the bright shining of a lamp gives light to you."