Assuming the general western civilization consensus on good and evil we have a good God and an evil God in Satan. Everything good that happens in our lives we attribute to the good God and anything bad we attribute to the evil God.
Many strive to please the good God for a reward of acceptance into His kingdom. In the same token many also strive to please the evil God for His reward. The good God resides in this wonderful phenomenon known as Heaven and Satan dwells in an evil phenomenon known as Hell.