Much of what we know about Paul's life is from the Book of Acts
Acts of the Apostles - Wikipedia
Then theyretraced their steps back through Lystra, Iconium, and Antioch (in Pisidia)(Acts 14:21).Paul and Barnabas went throughout Pisidia, Pamphylia, then to Perga, Attalia,and sailed back to Antioch in Syria (Acts 14:24-26)The first journey ends in Antioch, Syria, where Paul and Barnabas staythere a long time (Acts 14:28).The dates for the events from 50-60 AD are found by counting backwards from thesuccession of Felix's reign as Procurator in Judea by Porcius Festus in 60 AD.
Information on the Book of Acts of the Apostles
Such theories are demanded only if Luke is regarded as the sort of historian whose main purpose is factual completeness and accuracy. In fact, however, we have seen that everywhere Luke's account is selected and shaped to suit his apologetic interests, not in defiance of but in conformity to ancient standards of historiography. The questions are generated as well by the presumption that it is Paul's fate which most concerns Luke, and a failure to clearly indicate his end demands an explanation. But in fact, we have seen that Luke's argument involves far more than Paul's personal destiny. As important as Paul is to Luke and as dominant as he has been in the second half of Acts, he remains for Luke ultimately only another in a series of prophetic figures through whom God's message of salvation is brought to the people.