“There are certain things in Christianity that can be understood from the outside, before you have become a Christian. But there are a great many things that cannot be understood until after you have gone a certain distance along the Christian road. These things are purely practical, though they do not look as if they were. They are directions for dealing with particular crossroads and obstacles on the journey and they do not make sense until a man has reached those places.” (C.S. Lewis, Mere Christianity, HarperOne Edition, 2001, p. 144)