The Acts of the Apostles (Greek Praxeis Apostolon) is a book of the Bible, which now stands fifth in the New Testament after the four gospels. This book describes the development of the early church from Christ's Ascension to Paul's sojourn at Rome. It is commonly referred to as simply Acts. The traditional view is that it was written by the Macedonian Christian physician and historian Luke the Evangelist (also the author of the gospel of Luke).
An alternative name for the book is Acts of the Holy Spirit. It describes many of the journeys and actions taken by the apostles, meaning "those who have been sent" by God, to be His witnesses.
This was originally applied exclusively to those who had personally seen and/or lived with Jesus of Nazareth. The book of Acts contains many descriptions of miraculous events (which were given as signs from God to validate the apostles' teachings), which were performed by the Holy Spirit through the apostles. These included miraculous healings, casting out evil spirits, the raising of the dead, and also historical descriptions of everyday life in The Roman Empire and in ancient Jerusalem.
More...