[13] See two articles on St. Columbanus and his library in the _Expositor_ for June and August 1889.
[14] Dr. Salmon, in his _Introd. N.T._, pp. 48-54, describes the Muratorian Fragment.
But this is not the whole of the argument which can be derived from the Epistle of the Lyonnese Christians, which is given to us at full length in the fifth book of the _Church History_ of the celebrated historian Eusebius. Their incidental notice of the Acts involves a vast deal when duly considered. The Epistle from Lyons implies that the Acts were received as authoritative and genuine in the churches of towns like Ephesus, Philadelphia, Smyrna, Miletus, where the memories and traditions of the Apostles were still vivid and living. Then, too, the Bishop of Lyons had suffered in this persecution. His name was Pothinus. He was the first Bishop of the Church of Lyons, and he died when he was more than ninety years of age, and may have been a disciple of an apostle, or of one of the first generation of Christians. At any rate, his memory would easily carry him back to the days of Domitian and the times of the first century; and yet the Church over which this first-century Christian presided accepted the Acts of the Apostles. The testimony of Pothinus helps then to carry back the Acts of the Apostles to the year 100 at least. But we can go farther still, and closer to apostolic times.
The Gospel of St. Luke and the Acts of the Apostles are, we may say, universally admitted to be by the same writer. The reference of the Acts to the Gospel, the unity of style and tone of thought, all demonstrate them to be the production of one mind. Any circumstance therefore which proves the early existence of the Gospel equally proves the existence of the Acts of the Apostles. Now we have proof positive that the Gospel of St. Luke occupied an authoritative position and was counted an apostolic and sacred writing at Rome in the early years of the second century, say between 100 and 150, because when Marcion, whom we might call a primitive Antinomian, wished to compile a gospel suited to his own purposes, he took St. Luke's Gospel, cut out whatever displeased him, and published the remainder as the true version. The perversion and mutilation of St. Luke's work shows that it must already have held a high position in the Church at Rome, or else there would have been no object in mutilating it. Marcion's treatment of St. Luke proves the use and position the Gospel and the Acts must have occupied in days when the converts and companions of the Apostles were still alive.[15] That is as far as we can go back by external testimony. But then we must remember what these facts involve--that the Gospel and the Acts occupied authoritative positions in various parts of the world, and specially in Rome, Gaul, Africa, and Asia Minor, in the generation next after the Apostles. Then let us take up the Book of Acts itself, and what does this book, known at Rome and throughout the Christian world at that early period, tell us? It informs us that it was the work of the writer of the Gospel, and that the writer was a companion of the Apostle Paul throughout the portion of his career sketched in the latter part of the book. The Christian Church has never pinned its faith to the Lukian authorship of either the Gospel or the Acts. The question of the authorship of these books is an open one, like that of the Epistle to the Hebrews. The Acts has been attributed to Silas, to Timothy, to Titus; but I may say, without going into any further details on this question, that every attempt to ascribe the Acts to any one else save to the beloved physician has failed, and must fail, because he was the real author, well known to the living tradition of the Church of Rome in the early part of the second century, as that tradition is handed down to us in the language of the Muratorian Fragment.