In this powerful sermon, Pastor Ray discusses the importance of the Holy Spirit in the lives of believers. He delves into the significance of the day of Pentecost and how the Holy Spirit works in the lives of believers. He emphasizes the need for believers to be filled with the Holy Spirit and how this empowers them to fulfill their purpose and be effective witnesses for Christ. Pastor Ray also shares personal testimonies and examples to illustrate the impact of the Holy Spirit in the lives of individuals. This sermon is a powerful reminder of the role of the Holy Spirit in the lives of believers and the impact it can have on their faith and ministry.