What was Paul's first missionary journey about?

A:Raymond E. Brown (An Introduction to the New Testament) says the three journeys are only a convenient classification developed by students of Acts of the Apostles, which differs in significant ways from Paul's own accounts. In his undisputed letters, Paul gives an entirely different version of his travels from the first missionary journey in Acts, and even the second and third missionary journeys are difficult to reconcile with Paul's own itinerary.

With Paul's blinding of Bar-jesus on the first journey, we learn of Paul's ability to work miracles, something he did not claim in his own epistles. We also learn from this that expediency justifies immoral acts.