Oh man, if I was God...
Devils and demons everywhere, the dead rising from the grave like a zombie movie and lurching off in search of brains to eat, leviathan monsters stomping on Paris, cats and dogs getting it on together...
Your basic armegeddon stuff. Fire and brimstone, hellfire and damation. My Kingdom would be a thing to behold.
Maybe I'd "rapture" all the atheists to paradise first, though. Then I'd love to watch Christians and Muslims waving Bibles and Korans at me insanely, right before I boomed out like thunder "WRONG!!' and started turning them, very painfully, into giant spiders.
(On second thought, maybe it's a good thing that I'm not God. Like the Biblical Yahweh and the Islamic Allah, I suspect that I'm probably not emotionally right for the job.)