Mat 6:22-23 “The eye is the lamp of the body. If your eye is healthy, your whole body will be full of light. (23) But if your eye is bad, your whole body will be full of darkness. So if the light within you is darkness, how deep is that darkness!
Jesus realized that it would be difficult for His followers to see how His unconventional teaching on security for the future could possibly work. So He used an analogy of the human eye to teach a lesson on spiritual sight. He said that the eye is the lamp of the body. It is through the eye that the body receives illumination and can see. If the eye is good, the whole body is flooded with light. But if the eye is bad, then vision is impaired. Instead of light, there is darkness.
The application is this: The good eye belongs to the person whose motives are pure, who has a single desire for God’s interests, and who is willing to accept Christ’s teachings literally. His whole life is flooded with light. He believes Jesus’ words, he forsakes earthly riches, he lays up treasures in heaven, and he knows that this is the only true security. On the other hand, the bad eye belongs to the person who is trying to live for two worlds. He doesn’t want to let go of his earthly treasures, yet he wants treasures in heaven too. The teachings of Jesus seems impractical and impossible to him. He lacks clear guidance since he is full of darkness.
Jesus adds the statement that if therefore the light that is in you is darkness, how great is that darkness! In other words, if you know that Christ forbids trusting earthly treasures for security, yet you do it anyway, then the teaching you have failed to obey becomes darkness—a very intense form of spiritual blindness. You cannot see riches in their true perspective.
