7When they reached the borders of Mysia, they attempted to go into Bithynia, but the Spirit of Jesus did not permit them.
8Passing through Mysia, they went down to Troas;
9and there one night Paul saw a vision. A Macedonian was standing and appealing to him — ‘Come over to Macedonia and help us.’
10So, immediately after Paul had seen the vision, we looked for an opportunity to cross over to Macedonia, concluding that God had summoned us to tell the good news to the people there.
Acts 16
Acts 16:7-10