What metaphors are used in Doctor Faustus by Christopher Marlowe?

One particularly specific use of metaphor in the novel that is not directly related to the narrative reveals the way that such figurative imagery enters into the historical record. The reference here is not original to the author. He is using to offer a little telescoping into the mindset of the character spouting it:

“And France, the land of cathedrals, whose head was the All-Christian King.”