The Amun temple in Egypt.

Amun, from Egyptian Mythology, started his life as wind in Thebes and was considered a fertility god. In 2000 B.C., the city of Thebes started shifting their religion towards Amun over their old favorite, Ra. And at around 2000 B.C. Egypt began to see a majority of their wealth being funneled to the worship of Amun. Eventually in Egyptian lore, the two gods came together as one. When they merged together, it is said they created the universe and they went by the combined name, Amun-Ra. They were the personal protector of the pharaoh, and were hailed as a national god. Although his physical appearance is unknown, he was also thought to be a god of war, and it was believed that he could turn into a snake and shed his skin to regenerate himself.

A close-up of Aten holding ankhs, as depicted in Egyptian Mythology.

Aten is from Egyptian Mythology and is described as a red solar disk with rays coming down like the sun, which are suppose to represent his goodness. At the end of each ray were hands which held ankhs, an Egyptian symbol for everlasting life. He was believed to be the one universal god in 1400 BC, according to Pharaoh Akhenaton and Queen Nefertiti. Akhenaton closed all of the temples of the other gods, such as Amun and Ra, so that everyone could just worship Aten. After the Pharoah and his wife passed things changed, people began to worship Ra and the other gods again.

In 1400 B.C., Aten was the one true god of ancient Egypt.