Usually radio hosts have to offend sacred moral sensibilities to be thrown off the air. Opie and Anthony were fired after they encouraged a couple to have sex in St. Patrick's Cathedral. Don Imus lost his job after using racist and sexist epithets against the Rutgers University women's basketball team. But when the Lutheran Church-Missouri Synod canceled its popular, nationally syndicated radio program "Issues, Etc.," listeners were baffled. Billed as "talk radio for the thinking Christian," the show was known for its lively discussions analyzing cultural influences on the American church. It seemed like precisely the thing that the Missouri...