Church History of doctrines 31 Doctrines 29 Authority 20 Catholic Church 17 Biblical teaching 15 Unity 15 more ... Christianity 13 Christian union 12 History 12 Theology 12 Relations 10 Religious aspects 9 Église 8 Theology, Doctrinal 8 Catholicity 7 Church history 6 Criticism, interpretation, etc 6 Infallibility 6 Mission of the church 6 Church and the world 5 Ecumenical movement 5 Lord's Supper 5 Mystical body 5 Teaching office 5 Christian ethics 4 Discipline 4 Marks 4 Pastoral theology 4 People of God 4 less ...