was Akhenaten, an Egyptian Pharaoh who died around 1334 B.C. He asserted that the many gods Egypt worshiped did not exist--only Aten, the disk of the sun, was real. That is what Akhenaten claimed, long before Zoroastrianism, long before Abraham.
Great Pharaohs of Ancient Egypt
Lecture 4--Akhaneten
Professor Bob Brier
The Teaching Company