Matthew 1-12

Something in these books that Jesus stresses the most is that you shouldn't do things for God so that others can see. He calls these people hypocrites since they do it for recognition amongst others. Jesus says that the most important thing is to do it because you are willing to do it since God knows that you are doing it.

I liked something mentioned in chapter six. "The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light. But if thine eye be evil, thy whole body shall be full od darkness. I therefore the light that is in thee be darkness, how great is that darkness!"
6: 22, 23

What I understand from this is that your life depends on what you want to see. If you beleive you are sorrounded by goodness and that everything is positive. You'll consequentially be positive since there is no reason to be negative. On the other side, if you see everything as dark, bad and evil. You won't see a reason to support being good to others and therefore you'll be evil. I guess that the eye symbolizes the mind and therefore, its not what you see that causes this. It is what you think.