Answer: Akhenaton
Explanation: Akhenaton, or even known as Amenhotep, was Pharaoh, the ruler of ancient Egypt. His departure from the traditional Egyptian religion, which was polytheistic, was recorded, and he turned and established a religious service dedicated exclusively to one god - Aten. This religion is described as a quasi-monotheistic, or it can be said some kind of a precursor of monotheism. Some of the doctrines of this religion are that the god Aten is compared to the sun, which has to do with the roots of the Egyptian religion. Later it was avoided to call Aten a god, giving him status above all the gods, a deity that has no name which is a feature of monotheism.