Luke, likely a Gentile believer (based on Colossians 4:14 distinguishing him from 'those of the circumcision'), served as Paul's companion during portions of his missionary journeys, as evidenced by the 'we' sections in Acts. Paul affectionately calls him 'the beloved physician' (Colossians 4:14), suggesting both medical skill and personal warmth. When most had deserted Paul during his final imprisonment, 'Luke alone is with me' (2 Timothy 4:11)—a testament to faithful friendship. Tradition credits Luke with authoring both the Gospel bearing his name and Acts. His careful historical research, attention to medical details, and concern for the marginalized shine through both volumes.