Acts of the Apostles 16:5-9

So the churches were strengthened in their faith and grew larger every day. Next Paul and Silas traveled through the area of Phrygia and Galatia, because the Holy Spirit had prevented them from preaching the word in the province of Asia at that time. Then coming to the borders of Mysia, they headed north for the province of Bithynia, but again the Spirit of Jesus did not allow them to go there. So instead, they went on through Mysia to the seaport of Troas. That night Paul had a vision: A man from Macedonia in northern Greece was standing there, pleading with him, “Come over to Macedonia and help us!”