A vision (horama). Old word, eleven times in Acts, once in Mat 17:9. Twice Paul had been hindered by the Holy Spirit from going where he wanted to go. Most men would have gone back home with such rebuffs, but not so Paul. Now the call is positive and not negative, to go “far hence to the Gentiles” (Act 22:21). He had little dreamed of such a call when he left Antioch. Paul’s frequent visions always came at real crises in his life.
A man of Macedonia (anēr Makedōn). Ramsay follows Renan in the view that this was Luke with whom Paul had conversed about conditions in Macedonia. Act 16:10makes it plain that Luke was now in the party, but when he joined them we do not know. Some hold that Luke lived at Antioch in Syria and came on with Paul and Silas, others that he joined them later in Galatia, others that he appeared now either as Paul’s physician or new convert. Ramsay thinks that Philippi was his home at this time. But, whatever is true about Luke, the narrative must not be robbed of its supernatural aspect (Act 10:10; Act 22:17).
Was standing (ēn hestōs). Second perfect active participle of histēmi, intransitive, periphrastic imperfect. Vivid picture.
Help us (boēthēson hēmin). Ingressive first aorist active imperative of boētheō (boē, theō), to run at a cry, to help. The man uses the plural for all including himself. It was the cry of Europe for Christ.