Acts 16:6-9 (KJV)
6 Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia,
7 After they were come to Mysia, they assayed to go into Bithynia: but the Spirit suffered them not.
8 And they passing by Mysia came down to Troas.
9 And a vision appeared to Paul in the night; There stood a man of Macedonia, and prayed him, saying, Come over into Macedonia, and help us.