If Islamic ethical thought reveals the relationship between God and man, we must observe what kind of being is God and what kind of being is man. Therefore, in order to continue the research, I divide ethics into `Godism`, `theory of human` and `the revelation and reasoning that deals with the relationship of both`. As a first attempt in a previous essay, I observed the `theory of human` viewed from Islamic ethics, in this essay, which follows the previous, I am going to discuss the Godism viewed from the Islamic ethics. But because Godism has a vast content, I am going to divide this research into two volumes. In this essay I am going to discuss Islamic ethics centered on the uniqueness of God(the fact that God is one), and the next essay is going to deal with ethics, but this time centered on the justice of God and the will of God. Just like I discussed the `theory of human`, in the same way I am going to research through comparing the controversial points and differences of traditional theology and rationalistic ethical thought.