If a powerful being would present itself to me as being god I would question and ask for very strong proof of this.
I agree with you there and but if we believe the bible he did give them cause and proof of this in biblical times, but this is all 2000 years later so now an understandable question of "what have you done for me lately" could be asked.
So if God did provide irrefutable evidence, something in the style of a miraculous event that the whole world would have to sit up and acknowledge does he then have the right to ask obedience and worship of us? If for the sake of argument we assume the bible is completely accurate would we still rebel because we want to walk our own roads without being restricted by rules from a supreme being?
I still struggle with these questions myself lol