Paul and Silas set out on a second missionary journey to visit the cities Paul had preached in earlier. This time they set out by land rather than sea, traveling the Roman road through Cilicia and the Cilician Gatesa gorge through the Taurus Mountains, then northwest toward Derbe, Lystra, and Iconium. The Spirit told them not to go into Asia, so they turned northward toward Bithynia. Again the Spirit said no, so they turned west through Mysia to the harbor city of Troas.