Chuck Smith delivers a powerful sermon on Ezekiel 26:3, emphasizing the prophecy against Tyre and its eventual downfall at the hands of multiple nations, starting with Nebuchadnezzar. He highlights the detailed predictions made by Ezekiel, which were fulfilled historically, showcasing the certainty of God's word. Smith reassures the congregation of God's promises regarding salvation and eternal life, while also warning of the consequences for those not found in the Book of Life. The sermon underscores the importance of recognizing the reliability of God's prophecies and the urgency of responding to His call for salvation.