Luke, who wrote both the Gospel of Luke and the book of Acts, was the only non-Jew to write any books in the Bible. These two books form a two-volume set (Luke-Acts), with the first volume being written around ad 61 and the second around ad 63. Both books are addressed to Theophilus, who seems to be a person of high position and wealth, quite possibly a Roman official whom Luke was hoping to convert to Christianity. Although specifically addressed to Theophilus, Luke’s books are clearly intended for a wider audience, strengthening the faith of believers and answering the skepticism of unbelievers.
Luke was well educated, a physician by trade (Colossians 4:14), and a friend and coworker of Paul (Philemon 24). When Luke writes about his firsthand experience as a companion of Paul, he shifts from third person to the first person “we” (Acts 16, 20-21, 27-28). Luke carefully researches the events that he records, interviewing eyewitnesses and investigating the work of other trusted sources, “so that you may know the certainty of the things you have been taught” (Luke 1:1-4). Luke’s research provides not only an excellent record of the works and words of Jesus, but also the best record of the early church and Paul’s missionary journeys, consistently confirmed by archeological findings.
Luke demonstrated his character and loyalty by remaining with Paul when he was imprisoned in Rome awaiting execution (2 Timothy 4:11).