The city of Babylon was defined in the Old Testament by greed, selfishness, violence, and idolatry. In the book of Revelation, Babylon has the same characteristics, along with being predicted to lead the rest of the world astray have a direct link with the Beast. Here, John identifies Babylon as both the World System (kosmos) and a harlot whose toxic ways we should avoid at all costs. He describes a day of justice when Babylon will be judged for their sins and be cast into the sea.