Most libraries divide popular novels into categories: westerns, mysteries, romance, spy novels and science fiction. The novels in those categories follow a certain formula. I'm watching to see if a library will someday have a shelf for the threat-to-Christianity novel. The threat-to-Christianity novel is one in which the hero has discovered a document that proves that Christianity is false. Sometimes it's a fifth gospel or a letter from Jesus written in his old age or some incontrovertible evidence that the whole Bible was made up. The hero is pursued mercilessly by secret agents of the Vatican, terrorists hired by the Orthodox Patriarch of Constantinople, and thugs employed by televangelists, all of whom are aided and abetted by the governments of the world who recognize that, if this new…