6 They went through the region of Phrygia and Galatia, having been forbidden by the Holy Spirit to speak the word in Asia. 7 When they had come opposite Mysia, they attempted to go into Bithynia, but the Spirit of Jesus did not allow them; 8 so, passing by Mysia, they went down to Troas. 9 During the night Paul had a vision: there stood a man of Macedonia pleading with him and saying, ‘Come over to Macedonia and help us.’
At Jesus’s ascension in the beginning of Acts Jesus tells the disciples that they will be witnesses to the ends of the earth. If this is the case then why keep them from going into Asia?