Summary from The Case for Christ by Lee Strobel
Blomberg argued persuasively that the gospel writers intended to preserve reliable history, were able to do so, were honest and willing to include difficult-to-explain material, and didn’t allow bias to unduly color their reporting. The harmony among the gospels on essential facts, coupled with divergence on some incidental details, lends historical credibility to the accounts. What’s more, the early church could not have taken root and flourished right there in Jerusalem if it had been teaching facts about Jesus that his own contemporaries could have exposed as exaggerated or false. In short, the gospels were able to pass all eight evidential tests, demonstrating their basic trustworthiness as historical records.