Acts is the second section of the New Testament and also the 5th book in the New Testament. It tells the history of the labors of the apostles and of the foundation of the Christian Church. It tells of the first 30 years of the Christian Church. The story is mostly centered on the apostles Peter and Paul who were the preeminent leaders of early Christianity.
The emphasis of the book is the importance of the day of Pentecost and being empowered to be effective witnesses for Jesus Christ. Acts records the apostles being Christ’s witnesses in Jerusalem, Judea, Samaria, and to the rest of the surrounding world. The book sheds light on the gift of the Holy Spirit, who empowers, guides, teaches, and serves as our Counselor. Reading the book of Acts, we are enlightened and encouraged by the many miracles that were being performed during this time by the disciples Peter, John, and Paul. The book of Acts emphasizes the importance of obedience to God’s Word and the transformation that occurs as a result of knowing Christ. There are also many references to those that rejected the truth that the disciples preached about the Lord Jesus Christ. The Book of Acts serves as a transition from the Old Covenant of law-keeping to the New Covenant of grace and faith.
(Note: Description used with permission from www.gotquestions.org)