Acts 16:6-10

And they went through the region of Phrygia and Galatia, having been forbidden of the Holy Spirit to speak the word in Asia; and when they were come over against Mysia, they assayed to go into Bithynia; and the Spirit of Jesus suffered them not; and passing by Mysia, they came down to Troas. And a vision appeared to Paul in the night: There was a man of Macedonia standing, beseeching him, and saying, Come over into Macedonia, and help us. And when he had seen the vision, straightway we sought to go forth into Macedonia, concluding that God had called us to preach the gospel unto them.