In this sermon, the preacher shares a powerful testimony of a man who had lived a life of violence and crime. The man confesses to being a murderer and expresses a desire to be saved by God. Miraculously, God does save him, demonstrating His ability to transform even the most hardened hearts. The preacher also shares about a specific incident where God instructed him to have an organ in the church, despite the congregation's initial resistance. The sermon concludes with a call to spread the message of revival and to expect great miracles through prayer.