Paul and Dan move on from scribbling diagrams of the structure of the whole book and get into some of the detail of the first few chapters.  They find that, right from the start, the word-pictures that John presents come straight from the Old Testament.  As they move into chapters 2 and 3 they discover the difficulties facing some of the early church communities and it all seems quite familiar and down to earth. But suddenly with chapter 4 the perspective changes with a view of a throne in heaven.  The rest of the episode is Paul and Dan reflecting on how the church's down-to-earth experience and the view from heaven might come together.