Acts is about the Spirit of God and mission. The Spirit of God fills, leads, and empowers the people of God to travel to all people groups in and among the nations with the gospel. One reads with anticipation of where the Spirit will lead next and what cultural and religious barriers he will enable the disciples to overcome so that all peoples hear the good news of Jesus. Acts is about travel. The gospel travels from a small group of Jewish disciples from the backwater province of Galilee now huddled together in prayer in a house in Jerusalem to Jews in Jerusalem, to the despised Samaritans, to a nation in Africa, and through Greco-Roman cities and villages until it reaches Rome, the capital of the known world. This book is about three journeys: an explanation of the message of Acts itself as it moves outward from Jerusalem, an invitation for us to move on what we learn, and the author's travels to places where the gospel spreads in Acts. Understanding the cities, the countryside, along with the roads one walked and ships one sailed to reach them helps readers visualize the journeys the gospel takes in Acts.