As more archeological finds are made, it seems the Biblical accounts are confirmed.

WRT the Gospels, a few years ago the Pool of Bethesda (5 porticoes), noted in John's Gospel, was identified. That area was destroyed in 70 AD. yet John states it was still there. According to the Muratorian fragment, dated ~160 AD, John was the last Gospel written, so that would indicate the others were written earlier, as the early writers noted.  

Internal evidence as noted by J. Robinson & late Dead Sea scholar Fr. Jean Carmignac, & others, indicate the Gospel writers were writing earlier & more accurately then many would give credit to.