This book examines how the Holy Spirit works in tandem with Christian believers as they preach and share the Gospel of Christ. It also shows how the Holy Spirit works with unbelievers to draw them to Christ, convict them of sin, enable them to understand the Gospel, and give them saving faith to receive Christ. The second part examines how the voice of God works through the preaching of God's Word and the effect that it can have on the people hearing it in their hearts.