In this sermon, the preacher emphasizes the importance of being holy and living a life that reflects God's love. He references John 3:16-17, which highlights God's love for the world and His purpose of salvation through Jesus. The preacher encourages the audience to recognize the treasure they have in God and to build their faith by memorizing Psalm 111. He also discusses the steps to holiness, including forsaking the ways of the world, showing love through self-giving service, and gladly obeying God's commandments. The sermon concludes with a prayer for guidance and understanding in living a holy life.