Matthew 6:22,23
<p><a href="http://bible.cc/matthew/6-22.htm" ><b>22</b></a>The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light. <a href="http://bible.cc/matthew/6-23.htm" ><b>23</b></a>But if thine eye be evil, thy whole body shall be full of darkness. If therefore the light that is in thee be darkness, how great <i>is</i> that darkness!
 
<a href="http://nasb.scripturetext.com/matthew/6.htm" >New American Standard Bible</a> <a href="http://www.lockman.org" >(©1995)</a>
"The eye is the lamp of the body; so then if your eye is clear, your whole body will be full of light.</p>