There are many different questions that need to be asked about God, and they are all distinct from each other. People fall into logical black holes when they fail to understand this simple point. Proving that God exists is not at all the same as proving that he (assuming this is the proper pronoun to use) is omnipotent, or omniscient, or good, or even that there is one of him. These are all completely different questions, whose arguments may or may not be related. If I attempt to prove that God exists, that argument should be examined according to what it is attempting to do, not anything else. If that argument does not prove that there is one God, or that God is all-powerful, or anything else, that is not a problem.