Luke 11:34-36

Wesley(i) 34 The eye is the lamp of the body: therefore when thine eye is single, thy whole body is full of light, but when thine eye is evil, thy body also is full of darkness. 35 Take heed therefore, left the light that is in thee be darkness. 36 If then thy whole body be full of light, not having any part dark, the whole shall be as full of light, as when a lamp enlightens thee with its bright shining.