In his response to the mass shooting in Aurora, Colo., Mitt Romney offered a rare glimpse into his Mormon religion – one of those public moments for the man who would be the nation’s political leader but who so far has been very private about his personal faith. “Today we feel not only a sense of grief, but perhaps also of helplessness,” Mr. Romney said. “But there is something we can do. We can offer comfort to someone near us who is suffering or heavy-laden. And we can mourn with those who mourn in Colorado.”