The Historical Reliability of the New Testament Quotes

“Third, most of Jesus’s teachings would have been repeated dozens of times as the disciples followed Christ in his itinerant ministry. If Jesus preached in most or all of the more than 200 villages in Galilee (cf. Matt 9:35; Josephus Life 45.235), his followers who regularly accompanied him could easily have heard his messages often enough to cement them in their memories.”
― Craig L. Blomberg, The Historical Reliability of the New Testament: Countering the Challenges to Evangelical Christian Beliefs