Luke 11:33-36

³³No man, when he has lit a lamp, puts it in a cellar, nor under a basket, but on the stand, that they which enter in may see the light. ³⁴The lamp of the body is the eye. Therefore when your eye is good, your whole body also is full of light; but when it is evil, your body also is full of darkness. ³⁵Therefore see whether the light that is in you isn`t darkness. ³⁶If therefore your whole body is full of light, having no part dark, it will be wholly full of light, as when the lamp with its bright shining gives you light."