What does the Holy Spirit do in the life of a believer?

The role of the Holy Spirit in a believer's life is multifaceted, serving as a Comforter, Teacher, and Empowerer. As noted in Acts 1, the Holy Spirit is given to equip believers to be witnesses of Christ. He guides them into all truth (John 16:13), ensuring that they understand and apply the teachings of Christ. Furthermore, the Holy Spirit convicts the world of sin, righteousness, and judgment (John 16:8), working internally in believers to produce faith and obedience. The sermon illustrates this as the Spirit's sound in the mulberry trees, prompting David to act, reflecting how the Spirit arouses believers to evangelize and glorify Christ. The assurance that the Holy Spirit is actively working in the lives of believers underscores the promise that they will lead them in God's truth and maintain their faith until the end.