"And the woman was arrayed in purple and scarlet colour, and decked with gold and precious stones and pearls, having a golden cup in her hand full of abominations and filthiness of her fornication: And upon her forehead was a name written, MYSTERY, BABYLON THE GREAT, THE MOTHER OF HARLOTS AND ABOMINATIONS OF THE EARTH."- Revelation 17:4-5 KJV

*Mystery Babylon is a world wide system covering many various aspects of Satan's kingdom. The Vatican is a major religious aspect of the system and is used by Satan to bring religious and spiritual deception to the world cloaked under "Christianity". Note that the Vatican has had many centuries of practice in this system.