Have you heard of the religion of Atenism? Looks like one of those monotheistic religions that predate Islam that Islam talks about.
And how it is possibly, literally, history’s biggest coverup operation. And how because of its coverup, it just ended up making Tut one of the more famous pharaohs. Anyways, the religion of Atenism was so popular that it fundamentally threatened the hierarchy of the clergy of the cults of Egypt. So they came together and formed a new cult, - cult of Amun, Re and Ptah. “For there are three in heaven, Amun, Re and Ptah but these are not three Gods but one God.”
Go figure. History just repeats itself but for Islam, Islam came to eclipse Christianity and all other paganisms.