The next year after Paul wrote these letters to the Thessalonians from Corinth, he returned to Jerusalem and Antioch (Acts xviii. 18-23), and the year following, probably 54, he set out on his third missionary journey, which took him through Galatia and Phrygia in Asia Minor to Ephesus, where his home was for two or three years. While there, perhaps in the year 57, he wrote the first of his letters to the Christians in Corinth. Shortly after writing it he went on to Macedonia, whence the second of his letters to the Corinthians was written; presently he followed his letters to Corinth, and while there, probably in 58, he wrote his letter to the Galatians. Galatia was a province rather than a city; there may have been several churches, which had been established by Paul, in the province; and this may have been a circular letter, to be handed about among them, copies of it to be made, perhaps, for the use of each of the churches. It was in the spring of the next year, while he was still in Corinth, that he wrote his letter to the Romans, the longest, and from some points of view, the most important of his epistles. He had never, at the time of this writing, been in Rome (ch. i. 13), but he had met Roman Christians in many of the cities of the East where he had lived and taught; and, doubtless, since all roads led to Rome, and the metropolis of the world was constantly drawing to itself men of every nation and province, many of Paul's converts in Asia and Macedonia and Achaia had made their way to the Eternal City, and had joined themselves there to the Christian community. The long list of personal greetings with which the epistle closes shows how large was his acquaintance in the Roman church, and, doubtless, by his correspondence, he had become fully informed concerning the needs of these disciples. He tells the Romans, in this letter, that he hopes to visit them by and by; he did not, however, at that time, expect to appear among them as a prisoner. This was the fate awaiting him. Shortly after writing this epistle he returned from Corinth to Jerusalem, bearing a collection which had been gathered in Europe for the poor Christians of the mother church; at Jerusalem he was arrested; in that city and in Cæsarea he was for a long time imprisoned; finally, probably in the spring of 61, he was sent as a prisoner to Rome, because he had appealed to the imperial court; and here, for at least two years, he dwelt a prisoner, in lodgings of his own, chained by day and night to a Roman soldier. During this imprisonment, probably in 62, he wrote the letters to the Colossians, the Ephesians, the Philippians, and Philemon. From the first imprisonment he seems to have been released; and to have gone westward as far as Spain, and eastward as far as Asia Minor, preaching the gospel. During this journey he is supposed to have written the first letter to Timothy and the letter to Titus. At length he was re-arrested,