""It has been the fate of many books on John to be left unfinished, for its interpretation naturally forms the crowning of a lifetime. I have myself been intending to write a book on the Fourth Gospel since the 'fifties, before I broke off (reluctantly) to be Bishop of Woolwich, though I am grateful now that I did not produce it prematurely at that time. It means however that I shall be compelled to refer to and often recapitulate material directly...