Pharaoh Akhenaten the first monotheist

[Khaem]

I heard that some consider him to be a prophet since he preached monotheism and one god.

 

[ina-cilmi]

the first human monotheist was Adam aleyhi salaam

 

[Scipio Africanus]

It’s not genuine monotheism preached by the Abrahamic faiths. Atenism was basically Sun worship, they literally thought the Sun was God.