How does C. S. Lewis use imagery in The Lion, the Witch and the Wardrobe?

There is a lot of Christian imagery in The Lion the Witch and the Wardrobe. From the majesty of Aslan (a Christ Figure) to the wickedness of the White Which( a Devil-figure) the imagery around these two characters is represented. The glory of the green spring with its vivid colors comes out while the icy white stagnation of winter comes out as well.