The Book of Revelation shows the climax of the battle between God and Satan - of good and evil. Two cities demonstrate the difference between the Kingdom of God and that of Satan - Jerusalem and Babylon. We are told that Babylon will be destroyed but Jerusalem will thrive and we are commanded to leave Babylon. But it is clear that many of God\'s people today still live in \'Babylon\' without being aware of it. It is vital, therefore, that we understand what the term \'Babylon\' means and this is what this book seeks to clarify.Part One reveals the roots and character of that \'Babylon\', applying the lessons of Nimrod and the Tower of Babel and shows how the Church is dominated by its character, outlining the ways in which God\'s people can become trapped into becoming citizens of Babylon. It traces the development of the spirit of \'Babylon\' in the early Church and how the writers of the letters in the New Testament combatted it. It also shows the parallel with today, and considers the final demise of Babylon.Part Two reveals the roots and character of \'Jerusalem\' - it proposes that we should develop a different relationship with God and His people, looking at biblical characters and New Testament practices - throughout supported by the relevant passages from Scripture. It suggests that the future expectations that spiritual Jerusalem will fulfil can be enjoyed now if we are prepared to be obedient to the Holy Spirit.The Appendices provide a thorough exposure of the practices of tithing, the use of paid workers, and the error of leadership that perpetuates the spirit of \'Babylon\' and stifles the spirit of \'Jerusalem\'.