A good read on the dating of the gospels. Evidence seems to indicate that Luke and Mark were probably written some time in th 50’s or 60’s as they mention nothing about the destruction of the temple in 70 AD. and Luke mentions nothing of Paul’s death which would have been some where around 65-69 AD.

http://evidenceforchristianity.org/gospeldates/

The Gospels remind me of 4 different investigative reports, written by two eye witnesses and two who based their reports on eye witnesses and ultimately all 4 led to the same conclusion. That Jesus was the son of the living God, was crucified and physically rose from the dead.