Paul's Visits To Macedonia and Greece And Seven Days in Troas (20:1-6).
It is indicative of Luke's concentration on the new direction in which events have turned, and his purpose in writing what follows, that he ignores many things of which we would wish to have been apprised. We are reminded again that Acts is not ‘a life of Paul'. His main concern is now to demonstrate that God will so work events that having been faced with false royal rule at Ephesus the Kingly Rule of God will triumph in Rome.
However, in passing we may note that while at Ephesus Paul has been engaging in the Corinthian controversy and has written letters to the Corinthians, of which we have 1 Corinthians, and that now, on these visits so cursorily dealt with, he will be finally reconciled with the Corinthians, writing 2 Corinthians from Macedonia once Titus has arrived, and following it with a visit to Corinth. He will also receive from those involved the Collection for the people of God in Judaea, the collection taken up by the Macedonian and Greek churches of which the Corinthian letters indirectly tell us a good deal. But Luke is interested in none of these things. He wants us to see Paul's visit to Jerusalem as God-impelled and with a deeper motive behind it. His concern is with the continual spread of the Good News and how Apostolic ministry will reach Rome. Thus these times are rapidly passed over.
From 2 Corinthians 2:12; 2 Corinthians 7:5-7 we learn that in fact on leaving Ephesus Paul had stopped at Troas where he had found an open door for ministry, but that he was so constrained by his love and fear over the Corinthians that he had cut it short and sailed for Macedonia where he waited in agonies until Titus arrived with the good news that all was well at Corinth. This need not mean that he did no preaching at Troas. He would have taken any opportunity that came his way while he was there, however he felt. The point is that when this was beginning to be fruitful he left the work to others because of his concern to see Titus with news of the Corinthian situation.