The gospel according to Luke was written in Rome by Luke, the
physician, one of Paul's most faithful companions and friends. The
author states that many had undertaken to collect the facts preached
concerning Christ and believed among the Christians, according to
the traditions handed down from eye-witnesses, and consequently, in
order to secure a collection that would be reliable, he himself had
diligently searched out everything that at the time of the writing was
available. These data, the result of diligent research, Luke endeavors
to put before the readers in chronological order, while the two
previous evangelists pay but little attention to chronology. The gospel
was written under the supervision of Paul.