Psalm 110 is the most frequently quoted Old Testament passage in the New Testament because it reveals the identity and reign of Jesus Christ. In this royal psalm, David describes the Messiah as both the eternal King who reigns over every enemy and the eternal Priest who offered Himself as the perfect sacrifice for sinners. As we explore this remarkable psalm, we will see what kind of King Jesus truly is—a conquering King who will judge the nations, yet a gracious High Priest who invites all who repent and believe to find mercy, forgiveness, and peace through Him.