"There is so much evidence that the Gospels were written in the Second Century that it’s hard to believe that the vast majority of scholars still stick stubbornly to the belief that they are a First Century production. The earliest known Christian writings are the letters of the Apostle Paul, dated sometime between 48 and 58 A.D.; but there are no copies of these original documents [1], and there are many questions about their authenticity [2]. Some people believe that the earliest versions of the four Gospels were written between 60 A.D. (Mark) and 100 A.D. (John), but there is no proof of these early dates, and some scholars believe that all the Gospels were written after 100 A.D. (e.g., Acharya, 1999; Ellegard, 1999; Keeler, 1965; Koester, 1980; Wheless, 1990). Here is some evidence to support this theory:
* The first epistle of Clement of Rome (c 64-96 A.D.), which is reasonably dated to 95 A.D., makes no mention of any of the Gospels although it does mention the epistles of Paul. This is a strange omission had the Gospels been circulating at that time.
* The Gospel of Luke borrows heavily from material in Josephus’ (37–100 A.D.) later works [3], especially Life and Against Apion, implying that the Gospel of Luke was not composed (much less published) until after 100 A.D., since Josephus’ later works weren’t published before 95 A.D.
* None of the Gospels are mentioned in the letters of Ignatius, Bishop of Antioch, which can be dated from 110 A.D.
* Archeologically, the earliest dated portion of any gospel is a tiny fragment consisting of a few words from what could be the Gospel of John, and this dates to 125 AD (Funk & Hoover, 1993, p. 9).