The Covenant of the Goddess is one of the largest and oldest Wiccan religious organizations. Wicca, or Witchcraft is the most popular expression of the religious movement known as Neo-Paganism. Wicca or Witchcraft is the fastest growing religion in the United States according to the Institute for the Study of American Religion. It's practitioners are reviving ancient Pagan practices and beliefs of pre-Christian Europe and adapting them to contemporary life. The result is a religion that is both old and new, both traditional and creative.