Acts is the continuation of Luke's Gospel, narrating the history of the early church from Jesus' ascension to Paul's ministry in Rome. The book documents how the gospel spread from Jerusalem to the ends of the known world, fulfilling the Great Commission. Luke emphasizes the role of the Holy Spirit in the church's expansion, the ministries of Peter and Paul, and how Christianity transcends ethnic barriers to include Gentiles. It is a theological history showing God's faithfulness to His promises.