Luke 11:33-36 - Light And Darkness
33 No man, when he has lighted a lamp, puts it in a secret place, neither under a bushel, but on a lampstand, that they who come in may see the light. 34 The lamp of the body is the eye: therefore when your eye is sound, your whole body also is full of light; but when your eye is evil, your body also is full of darkness. 35 Take heed therefore that the light which is in you be not darkness. 36 If your whole body therefore be full of light, having no part dark, the whole shall be full of light, as when the bright shining of a lamp does give you light.