What is the theme in The Lion, the Witch and the Wardrobe by C. S. Lewis?

C.S. Lewis’s Narnia is a Christian allegory. Themes of Christian love, forgiveness, and sacrifice can be found in the book. The New Testament in particular holds direct allusions between Aslan the Lion and Jesus Christ. The two are really metaphors for each other. The White Witch, with her dark temptations, would represent the Devil or the antichrist.