FootnoteThe Book of Acts was written by Luke, the physician who wrote the gospel of Luke; both works were written to a certain Theophilus (Luke 1:3, Acts 1:11). Acts is a record of the Acts of the Apostles, in particular the apostle Paul, following the ascension of Christ and the coming of the Holy Ghost into their lives. Luke was not only an eyewitness of the ministry of Christ, but was the close companion of the apostle Paul on his missionary journeys (observe the use of the words "we" and "us" in chapters 16, 20, 27 and 28).