As I mention below I missed the Christian parallel when I was thirteen but I certainly picked up on Aslan's numinous nature. Lewis himself pulled no punches about 'Aslan' being a parallel Christ even using the Lion's name for God in private letters. He also wrote a little boy worried because he loved Aslan better than Jesus that the two were effectively one and preferring the lion body to the human one was just the way a little boy's imagination works.

At the end of Prince Caspian Aslan himself tells Peter and Susan they must learn to know and love him in their own world. Narnia *is* a Christian myth or allegory and I for one have no problem with that.