Duane Sheriff teaches the importance of Jesus as the Passover Lamb. Jesus's sacrifice on the cross fulfills the prophecy of the Passover Lamb in the Old Testament. The lamb's blood was used to symbolize salvation and protection for the Israelites in Egypt. Through His sacrifice on the cross, Jesus fulfills this prophecy by providing salvation and forgiveness of sins to anyone who believes. This momentous event in history serves as the foundation for personal faith and spiritual growth, bridging the gap between humans and God.