"No one, having lighted a lamp, putteth it in a hidden place or under the measure, but upon the lampstand, that those who come in may have light. The lamp of thy body is the eye. When thine eye is clear, thy whole body is full of light; but when it is evil, thy body is dark. Take heed, therefore, lest the light in thee be darkness. If, therefore, thy whole body is enlightened, not having any part dark, the whole shall be full of light, as when the lamp with its brightness giveth thee light."