Luke 11:33-36 - Light And Darkness
33 No one, having lighted a lamp, putteth it in a cellar, nor under a bushel, but on a candlestick, in order that those coming in may see the light. 34 The light of the body is the eye: therefore when thine eye may be clear, truly thy whole body is lighted; but when it may be had, truly thy body is dark. 35 See then that the light which is in thee is not darkness. 36 If then thy whole body is lighted, having no part dark, all will be lighted, as when a lamp may light thee with its brightness.