The book of Acts is an introduction to Christianity. It deals with three simple subjects. First, Acts reveals the day that Christ's kingdom, the church, was established. Secondly, we find the beginnings of preachers, apostles, and prophets teaching the gospel of Jesus Christ to a lost and dying world. Thirdly, we find varying responses to the gospel message. Some people believed some people disbelieved. Those who believed and obeyed the gospel message were added to the Lord's church. Though the object of the book is very simple its affects upon man's history is profound. Two thousand plus years have passed since the church was established. The gospel message continues to be preached and people continue to have varying responses to truth.