In Revelation 17, John personifies Rome as a harlot living a life of decadence and debauchery.  She rides atop a ferocious beast with seven heads and ten horns.  The beast and the harlot join forces to wage war against the Lamb, but the Lamb is victorious.  In this very vivid depiction of judgment, John again reminds us that the forces of evil are no match for the Lamb of God, who overcomes all his foes and provides redemption for those who place their faith in him.