No he was not, if you read that in the bible then all you know for sure is that someone else wrote it when they heard stories that had been circulating for centuries before about a dozen other gods.
“Were the Gospels written by eyewitnesses as they claim, or were they written centuries later? The historical facts appear to make a strong case for a first century date.
Jesus' ministry was from A.D. 27-30. Noted New Testament scholar, F.F. Bruce, gives strong evidence that the New Testament was completed by A.D. 100.
3 Most writings of the New Testament works were completed twenty to forty years before this. The Gospels are dated traditionally as follows: Mark is believed to be the first gospel written around A.D. 60. Matthew and Luke follow and are written between A.D. 60-70; John is the final gospel, written between A.D. 90-100.
The internal evidence supports these early dates for several reasons. The first three Gospels prophesied the fall of the Jerusalem Temple which occurred in A.D. 70. However, the fulfillment is not mentioned. It is strange that these three Gospels predict this major event but do not record it happening. Why do they not mention such an important prophetic milestone? The most plausible explanation is that it had not yet occurred at the time Matthew, Mark, and Luke were written.
In the book of Acts, the Temple plays a central role in the nation of Israel. Luke writes as if the Temple is an important part of Jewish life. He also ends Acts on a strange note: Paul living under house arrest. It is strange that Luke does not record the death of his two chief characters, Peter and Paul. The most plausible reason for this is that Luke finished writing Acts before Peter and Paul's martyrdom in A.D. 64. A significant point to highlight is that the Gospel of Luke precedes Acts, further supporting the traditional dating of A.D. 60. Furthermore, most scholars agree Mark precedes Luke, making Mark's Gospel even earlier.
Finally, the majority of New Testament scholars believe that Paul's epistles are written from A.D. 48-60. Paul's outline of the life of Jesus matches that of the Gospels. 1 Corinthians is one of the least disputed books regarding its dating and Pauline authorship. In chapter 15, Paul summarizes the gospel and reinforces the premise that this is the same gospel preached by the apostles.
Even more compelling is that Paul quotes from Luke's Gospel in 1 Timothy 5:18, showing us that Luke's Gospel was indeed completed in Paul's lifetime. This would move up the time of the completion of Luke's Gospel along with Mark and Matthew.
The internal evidence presents a strong case for the early dating of the Gospels. …
A final piece of evidence comes from the Dead Sea Scrolls Cave 7. Jose Callahan discovered a fragment of the Gospel of Mark and dated it to have been written in A.D. 50. He also discovered fragments of Acts and other epistles and dated them to have been written slightly after A.D. 50.
4…
Another line of evidence is the writings of the church fathers. Clement of Rome sent a letter to the Corinthian church in A.D. 95. in which he quoted from the Gospels and other portions of the N.T. Ignatius, Bishop of Antioch, wrote a letter before his martyrdom in Rome in A.D. 115, quoting all the Gospels and other N.T. letters. Polycarp wrote to the Philippians in A.D. 120 and quoted from the Gospels and N.T. letters. Justin Martyr (A.D. 150) quotes John 3. Church fathers of the early second century were familiar with the apostle's writings and quoted them as inspired Scripture. …”
I hope this helps! If still in doubt, read the entire article!
Ref.: https://bible.org/article/historical-reliability-gospels
