We all know that Narnia, specifically 'The Lion, The Witch and The Wardrobe' holds particular biblical allegories. Aslan is God/Jesus and Edmund represents the sins of the world, for example, but here I think is a good place to discuss ALL the possible theological outlooks in CS Lewis' Narnia...
Reading the Bible I found that actually the Trinity is never actually directly stated as being true. The idea of God being 1 and 2 and 3 at the same therefore is invention, at least by the Councils of Nicea and Chalcedon...what significance does the Trinity have, if any?