Luke 11:34–36

34Your eyes are like a lamp for the body. When your eyes are sound, your whole body is full of light; but when your eyes are no good, your whole body will be in darkness. 35Make certain, then, that the light in you is not darkness. 36If your whole body is full of light, with no part of it in darkness, it will be bright all over, as when a lamp shines on you with its brightness.”