Q. May I ask what is Luke’s nationality? Or if he is a Jew, a gentile or a mixture of both?
A. The Bible doesn’t reveal Luke’s nationality, but from historical sources we learn that he was born in Antioch, Syria and is thought by many to have been a Gentile. Paul seems to have confirmed this, leaving Luke off a list of Jews who were traveling with him, then mentioning him separately as also being present (Colossians 4:10-11, 14). If so, Luke was the only Gentile author in the New Testament.
Luke was well educated in the Greek culture, and a physician by profession. He was the author of both the Gospel that bears his name and the book of Acts, which were at one time were two parts of a single document.