Okay christians, im confused about your "God"?

Do you go into a room and turn on the dark switch, and have an inky black mist cover up the light? Or do you just turn off the light switch? In the same way that dark is absence of light, what we call "evil" is absence of God, or good. In order for God to know Itself, it would have to know what it is not. In order for our vision to work, there must be contrast. In order for our hearing to work, there must be both presence and absence of sound. So in order for there to be such a thing as good, there must be such a thing as lack-of-good, or evil. We have free will to decide what comes into our experience. It's about focus. Whatever you focus on becomes more.