400
These words come from this ruler in this ancient civilization, and have this significance to the culture.
"You rise in perfection on the horizon of the sky, living Aten, who started life. Whenever you are risen upon the eastern horizon, you fill every land with your perfection. You are appealing, great, sparkling, high over the land; your rays hold together the lands as far as everything you have made."
Who is Akhenaten of ancient Egypt, and what is the praise of one god above others which establishes a quasi-monotheism during the New Kingdom?