Bart Ehrman is the US author of the bestselling book "Misquoting Jesus" (In the UK "Whose word is it?").  He calls into question the authority of the New Testament as scribal changes over time have changed the documents. 

So can we trust the scripture? Bible scholar Peter Williams believes in the reliability of the New Testament and that Bart's prognosis is far too pessimistic.

To hear more discussions between Christians and non-Christians go to www.premier.org.uk/unbelievable.