St Luke was a gentile who converted to Christianity. A doctor by profession, he wrote the third Gospel and Acts of the Apostles. He accompanied St Paul on his second and third missionary journeys. It is believed that Luke is the person who is referred to in the famous "we" passages of Acts where the story changes from "they" to "we."
Luke was a master storyteller. Some English language critics maintain that the parable of the Prodigal son is the best short story of any kind ever written. Luke's Gospel contains many passages that are unique to it alone, especially chapter 18. His infancy narratives and his record of the life of Mary lead many to believe that he spent time with Our Lady after he converted. Luke's writings are fresh and accurate, done with the mind of a trained doctor and fervent disciple.