The prophet John Zebedee said in his writing that upon the 2nd seal of history being broken people will kill each other. He did not say this was a war. He did not say what casualties would develop. But immediately after this time will be a historically severe depression that then leads to a quarter of the earth's population dying. The people witnessing truth will die as victims of violence. And then immediately after that the sky will be darkened, the moon and sun will not give out its light and the stars will fall from heaven. The reality we take for granted will be unraveled completely. In the panic people will seek shelter underground. You can expect these events to unfold rapidly to preserve the flesh of the very elect, whoever they are.