No I still say God is an idea, because you have to believe in ideas to give them credence. That post was the exact same, just added more clarification, since your response didn't seem to understand it. Also yes cake is unfortunately not able to speak, and thereby communicate its coming, yet someone created it. I am trying to draw the same parallel to God; it did not exist until someone created it. If you want, its like a painting, it didn't exist until someone painted it.
Secondly, "Conception of God" doesn't cut it. There was no defined term such as "God" (I am talking about the God), there were however deities that sprang from Pagan beliefs in 'spirits". But that is another topic altogether. Back to what I was saying, many ideas we say are true simply did not exist back then, so they used a "One thing fits all" to cover so called miracles. Modern Science can prove all this including how we came to be. So no the ancients did not have any idea or cognition of God.
Thirdly, "Doesn't the fact that the beliefs associated with his descendants predate him give more credence to their potential truth?" following the above statement in my post, this is not true. It can only be true if God somehow predated humans which is near impossible to prove since dinosaurs are all dead and we have no way to see what they were thinking. Its somewhat like a paradox.
*Phew... All that typing made my wrists sore.