RINGO : [It's a fairly well-known premise in the Bible, isn't it?]
Yes, I agree it does suggest god is all powerful and anything disputing that would have to be wrong in your view. Logically I would agree with that. It doesn't make sense.
However, if we can dismiss Satan as not existing then the same criteria can be used with god. If Satan is a part of us then so is god. We exist! They don't! They are figments of all our imaginations.
The bible is a story. If we take out the devil, there is no story. If we take out god, we have no saviour. If we have no saviour then we have to save ourselves. God help us!!!!!!! That's a joke, Ringo.