Luke 11:34-36

34 “The eye is the lamp of your body; when your eye is clear, your whole body also is full of light; but when it is bad, your body also is full of darkness. 35 “Then watch out that the light in you is not darkness. 36 “If therefore your whole body is full of light, with no dark part in it, it will be wholly illumined, as when the lamp illumines you with its rays.”