The Gospel of Luke is a synoptic Gospel, and the third and longest of the four canonical Gospels of the New Testament, which purport to tell the story of Jesus' life, death, and resurrection. The author was also the author of Acts of the Apostles. Like all gospels, the gospel originally circulated anonymously. Since at least the 2nd century, authorship has been ascribed to Luke, named in Colossians 4:14, a doctor and follower of Paul.
The introductory dedication to Theophilus, 1:1-4 states that since many others have compiled an "orderly narrative of the events" from the original eyewitnesses, that the author has decided to do likewise, after thorough research of everything from the beginning, so that Theophilus may realize the reliability of the teachings in which he has been instructed. The main characteristic of this Gospel, as Farrar (Cambridge Bible, Luke, Introduction) remarks, is expressed in the motto, "Who went about doing good, and healing all that were oppressed of the devil" (Acts 10:38; cf. with Luke 4:18). Luke wrote for the "Hellenistic world".
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