Acts 18:9-11 (KJV)
9 Then spake the Lord to Paul in the night by a vision, Be not afraid, but speak, and hold not thy peace:
10 For I am with thee, and no man shall set on thee to hurt thee: for I have much people in this city.
11 And he continued there a year and six months, teaching the word of God among them.
Acts 16:6-10 (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.
10 And after he had seen the vision, immediately we endeavoured to go into Macedonia, assuredly gathering that the Lord had called us for to preach the gospel unto them.