“Bedroom Hymns” is an extended religious metaphor for sex with Florence comparing her love life to a religious experience. It is a bonus track from Ceremonials (Deluxe Edition).

The song was featured in the second trailer for the film adaptation of The Great Gatsby (2013). Florence + the Machine wrote and recorded “Over The Love” for the soundtrack.
https://www.youtube.com/watch?v=h7AFnJbETLw