Relations 599 Orthodox Eastern Church 508 Catholic Church 368 History 167 Interfaith relations 129 Doctrines 96 Christian union 80 more ... Church history 75 Église catholique 46 Église orthodoxe 43 Theology, Doctrinal 39 Eastern and Western Church 36 Protestant churches 36 Schism 36 Ecumenical movement 34 History of doctrines 34 Islam 30 Christianity 29 Anglican Communion 27 Church of England 25 Popes 25 Primacy 24 Histoire 20 Papacy 19 Lutheran Church 18 Controversial literature 13 Missions 13 Religious aspects 13 Middle Ages 12 Orthodoxe kerken 12 less ...