To understand John’s Gospel, or the “Book of Glory” as he calls it, we must remember that John was the youngest of the apostles and not fixated on Jewish culture and customs as the other apostles were, for two reasons: He was young enough to be flexible in his beliefs to absorb Jesus’s teachings in depth, and he lived long enough to develop the theology that fills his gospel and its companion – the Book of Revelation. This is what sets John’s Gospel apart from the other three that are more historical.