"With Sacred Songs, let us praise the holy Apostle the Narrator of the Acts of the Apostles and Author of the Bright Gospel of Christ the All-Hymned Luke Whose Fame is not Confined to Christ's Church for He is the Physician who Heals Men's Ills Nature's Frailties and the Soul's Injuries and he Prays Unceasingly, for our souls."
+ Troparion of St. Luke the Evangelist, Tone 5
The Holy Disciple and Evangelist Luke, was a native of Syrian Antioch, a Disciple from amongst the Seventy, a companion of the holy Apostle Paul (Phil. 1: 24, 2 Tim. 4: 10-11), and a physician enlightened in the Greek medical arts. Hearing about Christ, Luke arrived in Palestine and here he fervently accepted the preaching of salvation from the Lord Himself. Included amidst the number of the Seventy Disciples, Saint Luke was sent by the Lord with the others for the first preaching about the Kingdom of Heaven while yet during the earthly life of the Saviour (Lk. 10: 1-3). After the Resurrection, the Lord Jesus Christ appeared to Saints Luke and Cleopas on the road to Emmaus.
The Disciple Luke took part in the second missionary journey of the Apostle Paul, and from that time they were inseparable. At a point when all his co-workers had left the Apostle Paul, the Disciple Luke stayed on with him to tackle all the toiling of pious deeds (2 Tim. 4: 10-11). After the martyr's death of the First-Ranked Apostles Peter and Paul, Saint Luke left Rome to preach in Achaeia, Libya, Egypt and the Thebaid. In the city of Thebes he finished his life in martyrdom.
Tradition ascribes to him the writing of the first icons of the Mother of God. "Let the grace of He born of Me and My mercy be with these icons", -- said the All-Pure Virgin in beholding the icons. Saint Luke wrote likewise icons of the First-Ranked Apostles Peter and Paul. His Gospel was written by Saint Luke in the years 62-63 at Rome, under the guidance of the Apostle Paul. (From the website of the St. Luke the Evangelist Orthodox Church, Palos Hills, IL--go HERE  to read the complete article.)