III. St. Philip went down, then, to Samaria and preached Christ there, and in Samaria he came across the first of those subtle opponents with whom the gospel has ever had to struggle,--men who did not directly oppose the truth, but who corrupted its pure morality and its simple faith by a human admixture, which turned its salutary doctrines into a deadly poison. Philip came to Samaria, and there he found the Samaritans carried away with the teaching and actions of Simon. The preaching of the pure gospel of Jesus Christ, and the exercise of true miraculous power, converted the Samaritans, and were sufficient to work intellectual conviction even in the case of the Magician. All the Samaritans, Simon included, believed and were baptized. This is the introduction upon the stage of history of Simon Magus, whom the earliest Church writers, such as Hegesippus, the father of Church history, who was born close upon the time of St. John, and flourished about the middle of the second century, and his contemporary Justin Martyr, describe as the first of those gnostic heretics who did so much in the second and third centuries to corrupt the gospel both in faith and practice. The writings of the second and third centuries are full of the achievements and evil deeds of this man Simon, which indeed are related by some writers with so much detail as to form a very considerable romance. Here, then, we find a corroborative piece of evidence as to the early date of the composition of the Acts of the Apostles. Had the Acts been written in the second century, it would have given us some traces of the second-century tradition about Simon Magus; but having been written at a very early period, upon the termination of St. Paul's first imprisonment, it gives us simply the statement about Simon Magus as St. Luke and St. Paul had heard it from the mouth of Philip the Evangelist. St. Luke tells us nothing more, simply because he had no more to tell about this first of the celebrated heretics. When we come to the second century Simon's story is told with much more embellishment. The main outlines are, however, doubtless correct. All Christian writers agree in setting forth that after the reproof which, as we shall see, Simon Peter the Apostle bestowed upon the magician, he became a determined opponent of the Apostles, especially of St. Peter, whose work he endeavoured everywhere to oppose and defeat. With this end in view he went to Rome, as Justin Martyr says, in the reign of Claudius Cæsar, and as other writers say, in the time of Nero.