In this sermon, the preacher emphasizes the power of inviting Jesus into our lives to overcome any strongholds that may be holding us back. He shares a personal experience of preaching and witnessing a powerful response from the congregation, with people running to the altar and surrendering to God. The preacher then highlights the importance of doing something for the Lord Jesus Christ and the need for the Holy Spirit to empower us in our soul-winning efforts. He references the prophecy in Joel about the outpouring of the Spirit in the last days and encourages believers to be filled with the Spirit to reveal Jesus to others.