Horatius Bonar preaches on Revelation 19:12, emphasizing that God's eternal purpose is to govern the world through humanity, specifically through the Messiah, who embodies both Adam and God. Despite humanity's failure to maintain dominion due to sin, the promise of redemption and rightful rule remains through Christ, who will ultimately reign with many crowns, symbolizing His authority over heaven, earth, and all powers. Bonar highlights that true governance must align with divine principles, and that the Messiah will restore righteousness and justice, fulfilling God's original design for humanity's rule. The sermon calls believers to recognize Christ's sovereignty and the hope of His return to establish His kingdom on earth.