It says in the beginning, "Let make man in our own image, our own likeness."; and so we are suppose to be like how they are in heaven, in total agreement with the will of God, like they are in Heaven. But when we sin, we are going against His will. its says that God is very compassionate, and if we are not compassionate, we are going against what He want us to be, just like Him. So in this realm we are gods that isn't compassionate as the God of the Heavenly kingdom. We are suppose to be representing the Heavenly Father, and our desires suppose be what He desires, but we desires darkness rather than desiring the Light, and that is what sin is, going against what God has intended for us to be.