OK, one final post-- at least for a short bit.
I am not an atheist, but neither am I a theist. When it comes to the issue as to whether there is a God or Gods, my typical response is "I don't know". Therefore, I tend to refer to myself as a "non-theist"-- "agnostic" if you prefer.
Now because of this, I try to deal with the issue objectively, and to some theists, I know that may appear to come off as an atheist. Not only doesn't that apply to me, I have taught theology for over 30 years and, as a matter of fact, I have a two-part seminar that I am teaching on "Jesus & Judaism" in October and November.
As a scientist, I work from the paradigm of the scientific method, therefore you'll almost never see me use the words "proof" or "proven", but most likely "evidence", or some similar wording. Therefore...
I don't know if there's a God, nor do I assume if there is a God that there can't be any other Gods. Nor do I know what happened at the Big Bang, but I have found some of the evidence fascinating, which is why I have read quite a bit in this area recently even though I'm not a cosmologist (I'm a retired anthropologist-- mostly cultural).
As I mentioned on another thread, at this point in my life I am willing to call whatever caused our universe/multiverse "God", and pretty much leave it at that. One of the teachings found in Buddhist dharma is that it really doesn't make much of a difference what might have caused our universe/multiverse because what occurred in the past has passed. As much as I like dealing with certain issues like the Big Bang, I'm also aware that the inquiry is mostly academic.
I thought I'd write this as a brief explanation of where I'm coming from in general.
Shalom & namaste.