The Gospel contains a fairy-story, or a story of a larger kind which embraces all the essence of fairy-stories. They contain many marvels—peculiarly artistic, beautiful, and moving: ‘mythical’ in their perfect, self-contained significance; and among the marvels is the greatest and most complete conceivable eucatastrophe. But this story has entered History and the primary world; the desire and aspiration of sub-creation has been raised to the fulfillment of Creation. The Birth of Christ is the eucatastrophe of Man’s history. The Resurrection is the eucatastrophe of the story of the Incarnation. . . . To reject it leads either to sadness or to wrath.
Tolkien, “On Fairy-Stories,” 155-56