The sermon centers on the profound declaration that Jesus is both Lord and Christ, emphasizing His divine nature and the significance of His crucifixion and resurrection. Drawing from Acts 1 and 2, the message highlights how these events, including the sending of the Holy Spirit, definitively prove Jesus's identity as God. The preacher challenges listeners to confront the implications of this truth, urging them to acknowledge Jesus's authority over their lives and to recognize Him as the ultimate regulator, king, and savior, ultimately calling for a personal commitment to faith and obedience to His divine will.