The bible predicts that 2,000,000 will attack Israel, and God will kill them all. This will be in the Last Days, right as the Tribulation begins. Then, much of the world's population will be destroyed in a global earthquake. Be sure to get a good seat, it'll be quite a show... and only those who believe in Jesus Christ will be lifted out in the Rapture (missing that show).
I'm among those who'll have to miss it. But, you will really enjoy what comes next... the plagues, the seals broken, the bowls tipped, the Mark of the Beast, and the rise of the Antichrist.
Enjoy.
IOW, the world will start to resemble a series of clumsily written crank-em-out niche-market novels? :-)