Acts 16:1-10 ESV
Paul came also to Derbe and to Lystra. A disciple was there, named Timothy, the son of a Jewish woman who was a believer, but his father was a Greek. He was well spoken of by the brothers at Lystra and Iconium. Paul wanted Timothy to accompany him, and he took him and circumcised him because of the Jews who were in those places, for they all knew that his father was a Greek. As they went on their way through the cities, they delivered to them for observance the decisions that had been reached by the apostles and elders who were in Jerusalem. So the churches were strengthened in the faith, and they increased in numbers daily.
And they went through the region of Phrygia and Galatia, having been forbidden by the Holy Spirit to speak the word in Asia. And when they had come up to Mysia, they attempted to go into Bithynia, but the Spirit of Jesus did not allow them. So, passing by Mysia, they went down to Troas. And a vision appeared to Paul in the night: a man of Macedonia was standing there, urging him and saying, “Come over to Macedonia and help us.” And when Paul had seen the vision, immediately we sought to go on into Macedonia, concluding that God had called us to preach the gospel to them.
ESV: English Standard Version 2016