In a wide-ranging conversation with Pulitzer Prize-winning author Marilynne Robinson, President Obama suggested that Christians who take their religion the most seriously often adopt an “us versus them” mentality. In the interview, published in the Nov. 5 issue of The New York Review of Books, the president lamented “the fact that here in the United States, sometimes Christian interpretation seems to posit an ‘us versus them,’ and those are sometimes the loudest voices. “But sometimes I think you also get frustrated with kind of the wishy-washy, more liberal versions where anything goes,” Mr. Obama said, referring to Ms. Robinson. “How...