1. Repent and be baptized (37-41)
Everyone who has disobeyed God's laws or rebelled against him has shared in the crucifixion of Jesus. What shall we do? We must see the ugliness of our sins and the pain we have caused God and be cut to the heart. Then, we must repent and personally accept Jesus' death for the forgiveness of sins; we must be baptized with the Holy Spirit. This is the only way to be saved from this corrupt generation. Baptism with water is an outward sign of God's work within. It is a declaration to the world that I am a Christian, a part of the Body of Christ. When Peter preached, 3,000 people accepted his message.
2. Growing in the Christian life (42-47)
Christians must keep on growing. The early Christians show us how. They studied the Bible; they met together every day to praise God, to pray and to encourage one another. They gave sacrificially and shared what they had. They ate together with joyful hearts. They were a good influence in society.
Application: Lord, cut our hearts with your word until we repent and believe and are filled with your Spirit.
One Word: Repent and believe the gospel