Not sure that we've critiqued the Bible here.
But as the BBC article mentions, there were quite a lot of different manuscripts around before the Bible was canonised, all giving different interpretations of Christian belief and the life of Jesus - usually known as the Apocrypha or Pseudopigrapha.
I went around the internet a couple of years ago and created a library of all the ones I could trace which were translated to English and online:
http://www.comparative-religion.com/...ity/apocrypha/