These are Jesus’ exact words in the Sermon on the Mount. Jesus tells us that the “eye is the lamp of the body.” He also says, “if your eyes are good, your whole body will be filled with light.” At first, this confused me. But then I figured out what Jesus was trying to say. He was saying, “The eye is the lamp of the body.” It’s like the window to your soul, that whatever you look at is going to fill your body. So, if you’re looking at positive things — good things, as Paul says, “Whatever is pure, whatever is noble, whatever is right, etc” —  your whole body gets filled with light. But when we focus on the negative — all the bad stuff that’s happening and all the nasty circumstances of life — our whole body gets full of anger, bitterness, fear, and darkness. To look at the light doesn’t mean you don’t see the darkness, it just means that you focus on the light. Then, our whole body will be filled with light.