The sermon discusses the significance of Christ as outlined in the book of John, emphasizing his divine nature and sufficiency. It highlights the humility of John the Baptist, his recognition of Jesus's superiority, and his message of repentance and preparation for the coming of Jesus Christ. The message underscores the importance of Jesus Christ as a mediator between humanity and God, bridging the gap caused by sin. Jesus is the embodiment of grace and truth, offering salvation and daily grace to believers.