In the seventeenth chapter of Revelation John is shocked to his core at the sight of a woman riding a dragon or "beast". She is named, "Mystery Babylon, mother of Harlots", and the horror of her appearance easily matches her title. The beast has seven heads and ten horns. As I've noted in previous parts of this series, the beast's seven heads represent kingdoms or empires in chronological order, and as a rule in Scripture they're epitomised by specific kings who defined those kingdoms or are icons of them.