Yes, but since the figure in the story is omniscient, it doesn't matter if a lunatic could also claim to be as that has no bearing on the content of the Bible.
None of us have to know how it works in order for us to understand that in the story of the Bible, the God represented there was omniscient.
None of us have to know how it works in order for us to understand that in the story of the Bible, the God represented there was omniscient.