With the end of all life coming, Evil decided to attempt ending it herself and killed everyone in her way. Evil took all of the dead’s powers, hoping that she would become powerful enough to kill the god.
Good on the other hand gathered up all of the people and asked for everyone’s prayers and well wishes, as well as a token of goodness, something to remember everyone by. Everyone had given Good their power, as well as a small offering of trinkets and pictures.
Both of them acceded to power and entered the domain of god. Neither expected the other to exist. Good attempted to talk to Evil, but Evil pushed Good aside, not caring one bit for what Good had to say. The moment Evil saw god, Evil attacked.