Jimmy Carter’s Baptist faith was one of his calling cards in the 1976 presidential campaignJimmy Carter already had drawn months of media scrutiny as a devout Southern Baptist running for president. Then the 1976 Democratic nominee brought up sex and sin as he explained his religious faith to Playboy magazine. Carter was not misquoted. But he was certainly misunderstood, as his thoughts in the wide-ranging interview were reduced in the popular imagination to utterances about “lust” and “adultery.” Nearly a half-century later, as the 98-year-old Carter receives hospice care in the same south-Georgia home where he once spoke with...