Luke the Evangelist is one of the Four Evangelists—the four traditionally ascribed authors of the canonical gospels. The Early Church Fathers ascribed to him authorship of both the Gospel of Luke and the Acts of the Apostles, which would mean Luke contributed over a quarter of the text of the New Testament, more than any other author. Prominent figures in early Christianity such as Jerome and Eusebius later reaffirmed his authorship.
The New Testament mentions Luke briefly a few times, and the Pauline Epistle to the Colossians[Col 4:14] refers to him as a physician (from Greek for 'one who heals'); thus he is thought to have been both a physician and a disciple of Paul. Since the early years of the faith, Christians have regarded him as a saint. He is believed to have been a martyr, reportedly having been hanged from an olive tree, though some believe otherwise.
The Roman Catholic Church and other major denominations venerate him as Saint Luke the Evangelist and as a patron saint of artists, physicians, bachelors, surgeons, students and butchers; his feast day is 18 October.