Yes, that much I got from the film. I thought you'd interpreted it as he WAS the second coming (not just that he thought he was - if it ain't being Napoleon, or Louis XVI, it's being Jesus with these fruitcakes, never Joe Bloggs the greengrocer).
I love this idea that God is this really flouncy, vicious old bat who lashes out at her/his/its naughty kids by having them done to death in the most appalling ways, as 'a lesson'. You'd have the NSPCC, Heavenly Branch, round in a crack if that was remotely likely. Tap an Earth child made of flesh and bone a bit too much, and you're off to jail. But God (so many millions believe) gets to wipe out tens of thousands annually with his blasted tsunamis, earthquakes, volcanoes, tornadoes and foul pestilences, and it's okay, he's just teaching us naughty humans a lesson, and we should be grateful he's taken time out of his busy schedule to treat us so mercifully. Yeah.