Matthew 6:22 says, The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light.   We have heard it said that the eye is the light of the soul, but Jesus tells us that at least it is the light of the body.  Coming just after the discussion of treasures, I believe that we can say that as Christians that our focus, our single vision, must be on the things of God.  If we begin to focus on material things instead of spiritual things our whole body is affected.  Verse twenty-three warns, 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 is that darkness!  Though physically, if we are blind we stumble around in darkness and miss the beauty of the world, it is even worse when we stumble in spiritual blindness.  We must keep our eyes set on Jesus and not on the things of the world.  Verse twenty-four declares, No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.  I don't believe that this can be stated much more clearly.  We cannot serve two masters, which I believe would be material things and spiritual things.  We must never allow material things, whether possessions or people, to come between God and us.  Either God is the Lord of our whole life, or we are serving another master.  We can put no ifs, ands, or buts on following God.  Verse twenty-five says, Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment?  This once again is a very clear statement.  We might say that it is irresponsible to live this way, but Jesus tells us also that when we follow Him that the heavenly Father will meet our needs.  Jesus tells us that we are more than simply what we eat or drink if we are His followers.