The Book of Acts could be called The Acts of the Holy Spirit since there are fifty-six references to the Holy Spirit in the twenty-eight chapters of the book, more than in any other single book of the Bible. Huber L. Drumwright, Jr. stated that Jesus Christ continued his work through the lives and ministries of his disciples. In John 12:24 Jesus told his disciples, “I tell you the truth, unless a kernel of wheat falls to the ground and dies, it remains only a single seed. But if it dies it produces many seeds.” Walter Thomas Conner said, “The Holy Spirit is the presence of the living Lord Jesus in spiritual power in the lives of men.”
This work was begun at Pentecost as recorded in Acts 2:14-36 when the Holy Spirit was given as an indwelling as Jesus had promised before his death on the cross. The Spirit was given to dwell permanently once again inside all repentant believers, making regeneration possible for all mankind. Regeneration refers to the restoration of the intimate, direct, personal interaction between the Holy Spirit and the human spirit and soul that was lost at the Fall. Though yet fallen in our time humanity in repentance has been granted salvation by the grace and love of God through the sacrifice of his Son, Jesus Christ, resurrected by the power of the Holy Spirit. The price for sin has been paid. Life is restored in the living Jesus Christ. Spirit-indwelled individuals are spokespersons for God, and their testimony is Spirit-originated and Spirit-empowered. The first Christian sermon was given by Peter at Pentecost, and the events demonstrated that Jesus who was raised from the dead had his authority extended beyond our time into eternity and beyond Earth into heaven. Jesus reigns by virtue of his resurrection. The presence and power of the Holy Spirit is the proof.