President Donald Trump tweeted and retweeted 80 times between Friday and Sunday, a seemingly panicked flurry of activity that showed just how big a threat the Ukraine scandal and impeachment inquiry are. Among those tweets was a quote from Fox News contributor Robert Jeffress, an evangelical pastor from Texas, who warned that if Trump were successfully removed from office, civil war would follow. Apocalyptic rhetoric often flows readily from preachers' pulpits and politicians' platforms. Yet this warning of a looming civil war takes on a different meaning when it appears on the President's Twitter feed -- not only because of...