Acts 18:9-11

One night the Lord said to Paul in a vision, “Do not be afraid anymore, but go on speaking and do not be silent; for I am with you, and no one will attack you in order to hurt you, because I have many people in this city.” [Is 43:5; Jer 1:8] So he settled there for a year and six months, teaching them the word of God [concerning eternal salvation through faith in Christ].