The decline of Jerusalem Syndrome raises the question whether the phenomenon ever posed a threat As the new millennium approached, fears arose that Christian doomsday groups and sufferers of the much-vaunted “Jerusalem Syndrome” could spark religiously inspired violence in the city. In October 1999, Jerusalem police detained 21 members of the House of Prayer, an apocalyptic sect led by Brother David, a self-styled prophet from Syracuse, New York. It was the fourth time that year that the authorities cracked down on foreign religious groups for visa violations or threatening public safety. Israel was criticized in the foreign press after deporting