The Lion, The Witch, and the Wardrobe was written to be an allegory of Christ. Since both films follow fairly standard progressions for the plot of what is, in essence, the same story, they're bound to match up fairly well.
Religion has been doing that for the longest time. Thousands of years before Christianity, the Sumerians believed that God had sex with women on earth and any children born were then worshiped as Gods, The Egyptians had the same thing with their Gods. The came the Greeks who believed that Zeus had sex with women and his son named Festus was worshiped as a God. And then along came Mary. God has certainly been horny.