None of the gospels mention the destruction of the Jewish temple in 70 A.D. This is significant because Jesus had prophesied concerning the temple when He said "As for these things which you are looking at, the days will come in which there will not be left one stone upon another which will not be torn down," (Luke 21:5, see also Matt. 24:1; Mark 13:1). This prophecy was fulfilled in 70 A.D. when the Romans sacked Jerusalem and burned the temple. The gold in the temple melted down between the stone walls and the Romans took the walls apart, stone by stone, to get the gold. Such an obvious fulfillment of Jesus' prophecy most likely would have been recorded as such by the gospel writers who were fond of mentioning fulfillment of prophecy if they had been written after 70 A.D. Also, if the gospels were fabrications of mythical events then anything to bolster the Messianic claims -- such as the destruction of the temple as Jesus said -- would surely have been included. But, it was not included suggesting that the gospels (at least Matthew, Mark, and Luke) were written before 70 A.D.
Similarly, this argument is important when we consider the dating of the book of Acts which was written after the gospel of Luke by Luke himself. Acts is a history of the Christian church right after Jesus' ascension. Acts also fails to mention the incredibly significant events of 70 A.D. which would have been extremely relevant and prophetically important and garnered inclusion into Acts had it occurred before Acts was written. Remember, Acts is a book of history concerning the Christians and the Jews. The fact that the destruction of Jerusalem and the temple is not recorded is very strong evidence that Acts was written before A.D. 70. If we add to this the fact that acts does not include the accounts of "Nero's persecution of the Christians in A.D. 64 or the deaths of James (A.D. 62), Paul (A.D. 64), and Peter (A.D. 65),"1 and we have further evidence that it was written early
If we look at Acts 1:1-2 it says, "The first account I composed, Theophilus, about all that Jesus began to do and teach, 2 until the day when He was taken up, after He had by the Holy Spirit given orders to the apostles whom He had chosen." Most scholars affirm that Acts was written by Luke and that Theophilus (Grk. "lover of God") "may have been Luke’s patron who financed the writing of Luke and Acts."2 This means that the gospel of Luke was written before Acts.
•"At the earliest, Acts cannot have been written prior to the latest firm chronological marker recorded in the book—Festus’s appointment as procurator (24:27), which, on the basis of independent sources, appears to have occurred between A.D. 55 and 59."3
•"It is increasingly admitted that the Logia [Q] was very early, before 50 A.D., and Mark likewise if Luke wrote the Acts while Paul was still alive. Luke's Gospel comes (Acts 1:1) before the Acts. The date of Acts is still in dispute, but the early date (about A.D. 63) is gaining support constantly."4