AMONG the most inexplicable developments in this bizarre political year is that Donald Trump is the candidate of choice of many evangelical Christians. Mr. Trump won a plurality of evangelical votes in each of the last three Republican contests, in New Hampshire, South Carolina and Nevada. He won the glowing endorsement of Jerry Falwell Jr., the president of Liberty University, who has called him “one of the greatest visionaries of our time.” Last week, Pat Robertson, the founder and chairman of the Christian Broadcasting Network, told Mr. Trump during an interview, “You inspire us all.”