Frederick Oakeley

 O Antiphons

 Oates's Plot

 Oaths

 English Post-Reformation Oaths

 Archdiocese of Oaxaca

 Monastery of Obazine

 Obba

 Obedience

 Religious Obedience

 Obedientiaries

 Oblate Sisters of Providence

 Oblates of Mary Immaculate

 Oblates of Saint Francis de Sales

 Oblati

 Obligation

 Tighernach O'Braein

 Obregonians

 Obreption

 Terence Albert O'Brien

 David O'Bruadair

 Edmund Bailey O'Callaghan

 Torlogh O'Carolan

 Occasionalism

 Occasions of Sin

 Thomas Occleve

 Occult Art, Occultism

 Occurrence

 Vicariate Apostolic of Central Oceania

 Daniel O'Connell

 Charles O'Conor (1)

 Charles O'Conor (2)

 Octavarium Romanum

 Octave

 Gelasius O'Cullenan

 Eugene O'Curry

 Daniel O'Daly

 Donogh Mór O'Daly

 Carlo Odescalchi

 O Deus Ego Amo Te

 Cornelius O'Devany

 St. Odilia

 St. Odilo

 John Mary Odin

 Walter Odington

 St. Odo

 St. Odo (Oda)

 Odo

 Edmund O'Donnell

 John O'Donovan

 Bl. Odo of Cambrai

 Odo of Canterbury

 Odo of Cheriton

 Odo of Glanfeuil

 John O'Dugan

 Joseph O'Dwyer

 Johann Œcolampadius

 Episcopal œconomus

 Œcumenius

 John James Maximilian Oertel

 Oettingen

 Offa

 Offerings

 Offertory

 Divine Office

 Office of the Dead

 Maurice O'Fihely

 O Filii et Filiæ

 Diocese of Ogdensburg

 Marco D'Oggione

 Ven. John Ogilvie

 Diocese of Ogliastra

 Eugene O'Growney

 John O'Hagan

 Thomas O'Hagan

 John O'Hanlon

 Theodore O'Hara

 Patrick O'Hely

 Thomas O'Herlahy

 Ambrose Bernard O'Higgins

 Ohio

 Aloys Karl Ohler

 Dermod O'Hurley

 Maelbrighte O'Hussey

 Oil of Saints

 Ointment in Scripture

 Alonso de Ojeda

 Jean d'Okeghem

 Oklahoma

 St. Olaf Haraldson

 Nicolaus Oláh

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 Hugh Oldham

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 Jean-Jacques Olier

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 Oliva

 Gian Paolo Oliva

 Pierre Olivaint

 George Oliver

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 Michael O'Loghlen

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 Kathleen O'Meara

 St. Omer

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 Hugh O'Neill

 Owen Roe O'Neill

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 Ontology

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 Ophir

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 Gilles-Marie Oppenordt

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 Malachias O'Queely

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 Nicolas d'Orbellis

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 Oregon

 Archdiocese of Oregon City

 Bernard O'Reilly

 Edmund O'Reilly (1)

 Edmund O'Reilly (2)

 Hugh O'Reilly

 John Boyle O'Reilly

 Myles William Patrick O'Reilly

 Oremus

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 Nicole Oresme

 Organ

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 Barnaba Oriani

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 Orientius

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 Original Sin

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 St. Joseph Oriol

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 Orkneys

 Niccolò Orlandini

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 Barent Van Orley

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 Patrick Henry O'Rorke

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 Giuseppe Agostino Orsi

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 Orsisius

 Abraham Ortelius

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 Orthodoxy

 Feast of Orthodoxy

 Orthosias

 Ortolano Ferrarese

 Orval

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 Matthieu Ory

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 Osbald

 Ven. Edward Osbaldeston

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 St. Osmund

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 Arnaud d'Ossat

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 Ostensorium

 Suburbicarian Diocese of Ostia and Velletri

 Ostiensis

 Ostracine

 Christian Ostraka

 Ostrogoths

 Philip O'Sullivan Beare

 St. Oswald (1)

 St. Oswald (2)

 St. Oswin

 Otfried of Weissenburg

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 St. Othmar

 Marcus Salvius Otho

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 Archdiocese of Ottawa

 University of Ottawa

 St. Otto

 Otto I, the Great

 Otto II

 Otto III

 Otto IV

 Ottobeuren

 Otto of Freising

 Otto of Passau

 Otto of St. Blasien

 St. Ouen

 Feast of Our Lady, Help of Christians

 Feast of Our Lady of Good Counsel

 Brothers of Our Lady of the Fields

 Feast of Our Lady of the Snow

 Friedrich Overbeck

 Bernhard Heinrich Overberg

 Diocese of Oviedo

 Nicholas Owen

 John Oxenford

 Henry Nutcombe Oxenham

 Oxford

 University of Oxford

 Oxford Movement (1833-1845)

 Oxyrynchus

 Antoine-Frédéric Ozanam

 Jacques Ozanam

 Ozias

Feast of Orthodoxy


(or SUNDAY)

The first Sunday of the Great Forty days (Lent) in the Byzantine Calendar (sixth Sunday before Easter), kept in memory of the final defeat of Iconoclasm and the restoration of the holy icons to the churches on 19 February (which was the first Sunday of Lent), 842 (see ICONOCLASM). A perpetual feast on the anniversary of that day was ordained by the Synod of Constantinople, and is one of the great feasts of the year among Orthodox and Byzantine Uniats. The name "Orthodoxy" has gradually affected the character of the feast. Originally commemorating only the defeat of Iconoclasm, the word was gradually understood in a more general sense as opposition to all heterodoxy. In this way, though its first occasion is not forgotten, the feast has become one in honour of the true Faith in general. This is shown by its special service. After the Orthros and before the holy Liturgy a procession is made with crosses and pictures to some destined spot (often merely round the church). Meanwhile a Canon, attributed to St. Theodore of Studium, is sung. Arrived at the place, the Synodikon is read. This Synodikon begins with the memory of certain saints, confessors, and heroes of the faith, to each of whose names the people cry out: "Eternal Memory!" three times. Then follows a long list of heretics of all kinds, to each of which the answer is: "Anathema" once or thrice. The heretics comprise all the old offenders of any reputation, Arians, Nestorians, Monophysites, Monothelites, Iconoclasts, and so on. Then comes again "Eternal Memory" to certain pious emperors, from Constantine on. There is inevitably considerable difference between the Orthodox and Uniat lists. The Orthodox acclaim Photius, Cerularius, other anti-Roman patriarchs and many schismatical emperors. They curse Honorius among the Monothelites, the opponents of Hesychasm. The Uniat Synodikon is purged of these names. In Russia politics have their place in the Synodikon; the emperor and his family are acclaimed; all are cursed who deny the divine right of the Russian monarchy and all who "dare to stir up insurrection and rebellion against it". The text of the Canon, Synodikon, etc., and the rubrics will be found in either Triodion, Orthodox or Uniat.

ALLATIUS, De dominicis et hebdomadis Grœcorum, xv, appendix to De ecclesiœ occid. et orient. perpetuo consensu (Cologne, 1648); NILLES, Kalendarium manuale (2nd ed., Innsbruck, 1897), 101-18.

ADRIAN FORTESCUE.