Could anyone cite or give a source for a definition and an explanation of the term, "anathema"? What happens when a pope, a bishop, or a priest incurs anathema? What are the ramifications in the material realm? How serious is it? Is it contagious? If Pope Paul VI created new rites of sacraments against Canon XIII of the Seventh Session of the Council of Trent, is participation in such rites under anathema also?