Isn't it amazing how much we take light for granted until it is taken away? Think about it: Without light, we could not see. Without the light from the sun, we could not even live on this planet. Light shines in darkness to our benefit.
In his first epistle, John describes God as light with absolutely no darkness in Him. This is an interesting comparison, but one that is very true. Just as with light, God allows several things, to our benefit.
First, just as we could not see physically without light, so we cannot see spiritually without God. Those over whom God's light has shone can see our place in relation to Him. In other words, we can see that we need Him spiritually just as we need light physically. Without God's light in our lives, we will not be able to see where we are headed spiritually. We would have no sense of direction. Whenever we see this, we have an opportunity to turn to God, thank Him, and follow Him.
Second, just as we could not live on the planet earth without the light from the sun, so we could not live spiritually without the light from the Son. Without the Light Of The World, the world remains in darkness. Those of us who have turned to Christ have our spiritual lives illuminated daily by the Son of God, just as the sun illuminates our planet.
It is important, then, that we remember that God's light shines for our benefit, just as the physical sun gives light for our benefit. What is our appropriate response? First, we should thank Him for it. God did not have to send His Son. He freely chose to.
Second, we should make a change in our lives. If God's light has shown us that we have an issue in one area of our lives, we have a responsibility to do everything in our power to get rid of that issue. God did not shine His light in our lives for no reason. He expected a response to it. Everything that God does has a purpose.