“No man, when he has lighted a lamp, putts it in a cellar, neither under the bushel, but on the stand, that they which enter in may see the light. The lamp of your body is yours eye: when yours eye is single, your whole body also is full of light; but when it is evil, your body also is full of darkness. Look therefore whether the light that is in you be not darkness. If therefore your whole body be full of light, having no part dark, it shall be wholly full of light, as when the lamp with its bright shining does give you light.”