Acts 16:6-10

Now they passed through the territory of Phrygia and Galatia, after being forbidden by the Holy Spirit to speak the word in [the west coast province of] Asia [Minor]; and after they came to Mysia, they tried to go into Bithynia, but the Spirit of Jesus did not permit them; so passing by Mysia, they went down to Troas. Then a vision appeared to Paul in the night: a man from [the Roman province of] Macedonia was standing and pleading with him, saying, “Come over to Macedonia and help us!” And when he had seen the vision, we (including Luke) tried to go on into Macedonia at once, concluding that God had called us to preach the gospel to them.