Thematic Bible: What is the eye

The lamp of the body is the eye: when therefore thine eye is clear, thy whole body will be luminous, but if it be vitiated, thy whole body will be darkened. Let it be thy aim then, that the light which is in thee do not become darkness. If then thy whole body be illuminated, not having any dark part, it will be wholly luminous, as a lamp by its brightness diffuseth light.