Ben Witherington wrote a few years ago a fascinating and challenging paper on whether the Beloved Disciple was in fact Lazarus and not John. Witherington’s thesis is that Lazarus is not only the Beloved disciple, but that he is responsible for much of the material in John’s gospel – which was edited and compiled by John after Lazarus dies. Evidence? Well, why not read the paper. I think you will at least be fascinated by it.
You can read it as posted on Ben Witherington’s blog HERE