John 3:19 This is the verdict: Light has come into the world, but people loved darkness instead of light because their deeds were evil.
If we are doing something wrong, we are probably going to be hiding it in some way from others; maybe with the lights off or something.
What happens when the lights get turned on? What happens when people see what we are doing?
God does not have to turn the lights on to see what we are doing – He knows what we are up to at all times. It is the people around us we are hiding things from and that is all!