Possible. But what if what we know of God isn't the God that was originally thought of or created. Could very well be someone's imaginary friend, say a superman like character. And then through a bad game of telephone, it became the god we know of today. Language changes meanings and we see it happening all the time. Could very well be t hat it happened like that as well.
What you are suggesting is called apotheosis - the process to deify an individual or object to godhood. Buddha is a classic example of how even though the Buddha teaches there is no god, certain Buddhist sect have apotheosis the Buddha into the greatest of all god. We know apotheosis exists and have ample examples to verify. We even know deities can be created by man to control man. The idea is if we get 90% of the population to believe in god then they will be obedient and peace loving, while the 10% don't hold firm belief and can take advantage of the 90%. In economics, they call this a competitive advantage...LO
L! The question I have raised\ isn't about motives or advantages. The question is the ontology of god. Hear me out because this is the complex part. We know the universe is BILLIONS of years old. We know
the first archaeological evidence of god/deity dates over 500,000 years! I find it very, very hard cavemen can come up with the concept of god. These guys can't read, can't write, can't count, can't reason, etc... Frankly, in my opinion cavemen are a tad better than monkeys of today. If we find no evidence for monkeys to worship god, who taught man to worship god? Doesn't that make you think twice!?!? LOL!!!
Ask yourself this question too. What is more complex, counting to 10 or trying to understand a concept of god? If we are to look at the history of mathematics, counting 1,2,3 came before the notion of infinity (immeasurable, all powerful) which is a concept related to god.