In Acts 1:8, Jesus told His disciples that when the Holy Spirit came upon them—which He did in Acts 2—they would be His witnesses in Jerusalem, Judea, Samaria, and to the ends of the earth. Acts 13–28 is the record of the gospel’s advance to the ends of the earth. What began in Jerusalem (chap. 1) made its way to Rome (chap. 28). What started with the focus on Peter (chaps. 1–12) concluded with the focus on Paul (chaps. 13–28). The Holy Spirit directed every step. The Lord Jesus was exalted at every turn. The gospel went forth in unstoppable power.