As soon as he had seen the vision we set about leaving for Macedonia, certain that God had called us to announce the good news to them.
In context
8so they passed by Mysia and went down to Troas. 9In the night Paul had a vision: a man of Macedonia was standing there, pleading with him, “Cross over to Macedonia and help us.” 10As soon as he had seen the vision we set about leaving for Macedonia, certain that God had called us to announce the good news to them. 11So we put out from Troas and ran a straight course to Samothrace, and the next day to Neapolis, 12and from there to Philippi, a Roman colony and a leading city of that district of Macedonia. We stayed in that city for some days.