We believe in one God, the Father Almighty, Maker of heaven and earth, and of all things visible and invisible.
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Theosis (Deification)
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Prayer & Contemplation
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Fasting & Ascesis
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Scripture & Tradition
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The Holy Trinity
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Repentance & Forgiveness
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First Council of Nicaea
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First Council of Constantinople
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Council of Ephesus
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Council of Chalcedon
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Second Council of Constantinople
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Third Council of Constantinople
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Second Council of Nicaea
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St. Ignatius of Antioch
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St. Justin Martyr
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St. Irenaeus of Lyon
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St. Athanasius the Great
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St. Basil the Great
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St. Gregory the Theologian
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St. Gregory of Nyssa
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St. John Chrysostom
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St. Cyril of Alexandria
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St. Ambrose of Milan
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St. Augustine of Hippo
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St. John Cassian
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St. Leo the Great
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St. Gregory the Great
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St. Bede the Venerable
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St. Ephraim the Syrian
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St. John Climacus
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St. Maximus the Confessor
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St. Isaac the Syrian
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St. John of Damascus
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St. Symeon the New Theologian
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St. Gregory Palamas
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St. John of Kronstadt
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All sources currently indexed for search. Translations are public-domain editions from the Ante-Nicene Fathers (ANF) and Nicene & Post-Nicene Fathers (NPNF) series, ed. Schaff et al.
Holy Scripture
- Holy ScriptureOld Testament: Brenton Septuagint (LXX, 1851)
- Holy ScriptureNew Testament: King James Version (KJV)
Canonical Creeds, Catechisms & Confessions
- The Apostles' CreedApostles' Creed (traditional text)
- The Nicene CreedNicene-Constantinopolitan Creed (381 AD)
- Council of ChalcedonDefinition of Chalcedon (451 AD)
- Athanasian CreedAthanasian Creed / Quicunque Vult (c. 5th century)
- NPNF II-14Seven Ecumenical CouncilsThe Seven Ecumenical Councils of the Undivided Church
- Church of ConstantinopleSynodikon of Orthodoxy (843 AD; expanded with Palamite additions, 14th c.)
- St. Gennadios ScholariosConfession of Faith to Sultan Mehmed II (1453)
- St. Peter MogilaOrthodox Confession of the Catholic and Apostolic Eastern Church (1643; tr. Robertson, 1898)
- Dositheus II of JerusalemConfession of Dositheus / Decrees of the Synod of Jerusalem (1672)
- St. Philaret of MoscowShorter Catechism of the Orthodox Catholic Eastern Church (tr. Blackmore, 1845)
- St. Philaret of MoscowLonger Catechism of the Orthodox Catholic Eastern Church (tr. Blackmore, 1845)
Ante-Nicene Fathers (ANF)
- ANF IApostolic FathersThe Apostolic Fathers; Justin Martyr; Irenaeus
- ANF IIHermas; Tatian; Athenagoras; Theophilus; Clement of AlexandriaFathers of the Second Century
- ANF IIITertullianLatin Christianity: Its Founder, Tertullian
- ANF IVTertullian; Minucius Felix; OrigenFathers of the Third Century, pt. 1
- ANF VSt. Hippolytus; St. Cyprian of Carthage; NovatianFathers of the Third Century, pt. 2
- ANF VISt. Gregory Thaumaturgus; Dionysius of Alexandria; Julius Africanus; MethodiusFathers of the Third Century, pt. 3
- ANF VIILactantius; Victorinus; Methodius; CommodianusFathers of the Third and Fourth Centuries
- ANF VIIIPseudo-Clementine Literature; Apostolic ConstitutionsThe Twelve Patriarchs; Clementina; Apostolic Constitutions
- ANF IXOrigen; VariousOrigen's Commentaries on John & Matthew; Gospel of Peter; Diatessaron of Tatian
Nicene & Post-Nicene Fathers, Series I (NPNF I)
- NPNF I-1St. Augustine of HippoConfessions and Letters
- NPNF I-2St. Augustine of HippoCity of God and Christian Doctrine
- NPNF I-3St. Augustine of HippoOn the Holy Trinity; Doctrinal and Moral Treatises
- NPNF I-4St. Augustine of HippoWritings Against Manichaeans and Donatists
- NPNF I-5St. Augustine of HippoAnti-Pelagian Writings
- NPNF I-6St. Augustine of HippoSermon on the Mount; Harmony of the Gospels; Homilies on the Gospels
- NPNF I-7St. Augustine of HippoHomilies on the Gospel of John; First Epistle of John; Soliloquies
- NPNF I-8St. Augustine of HippoExpositions on the Book of Psalms
- NPNF I-9St. John ChrysostomOn the Priesthood; Ascetic Treatises; Homilies on the Statues
- NPNF I-10St. John ChrysostomHomilies on the Gospel of Matthew
- NPNF I-11St. John ChrysostomHomilies on Acts and Romans
- NPNF I-12St. John ChrysostomHomilies on 1 and 2 Corinthians
- NPNF I-13St. John ChrysostomHomilies on Galatians, Ephesians, Philippians, Colossians, Thessalonians
- NPNF I-14St. John ChrysostomHomilies on the Gospel of John and the Epistle to the Hebrews
Nicene & Post-Nicene Fathers, Series II (NPNF II)
- NPNF II-1Eusebius of CaesareaChurch History; Life of Constantine
- NPNF II-2Socrates Scholasticus; SozomenEcclesiastical Histories
- NPNF II-3Theodoret; Jerome; Gennadius; RufinusEcclesiastical History; Lives of the Monks; Commentaries
- NPNF II-4St. Athanasius of AlexandriaSelect Works and Letters
- NPNF II-5St. Gregory of NyssaSelect Writings and Letters
- NPNF II-6St. JeromeLetters and Select Works
- NPNF II-7St. Cyril of Jerusalem; St. Gregory of NazianzusCatechetical Lectures; Select Orations and Letters
- NPNF II-8St. Basil the GreatLetters and Select Works
- NPNF II-9St. Hilary of PoitiersSelect Works
- NPNF II-9St. John of DamascusAn Exact Exposition of the Orthodox Faith
- NPNF II-10St. Ambrose of MilanSelect Works and Letters
- NPNF II-11St. John Cassian; St. Vincent of Lérins; Sulpicius SeverusConferences and Institutes; Commonitory; Sacred History
- NPNF II-12St. Leo the Great; St. Gregory the GreatLetters and Sermons; Dialogues and Letters, pt. 1
- NPNF II-13St. Gregory the Great; St. Ephraim the Syrian; AphrahatMoralia on Job; Hymns and Homilies of Ephraim; Demonstrations of Aphrahat
Individual Works & Standalone Translations
- Desert Fathers (various)Paradise of the Holy Fathers, 2 vols (tr. Budge, 1907)
- St. Macarius the EgyptianFifty Spiritual Homilies (tr. Mason, 1921)
- St. Macarius the GreatSpiritual Homilies (seed selections)
- Evagrius PonticusOn Prayer (seed selections)
- St. Gregory of NazianzusFive Theological Orations (1894 ed.)
- Palladius of GalatiaThe Lausiac History (tr. Butler, 1898)
- St. Cyril of AlexandriaCommentary on the Gospel of John, 2 vols (tr. Pusey, 1874–85)
- Pseudo-Dionysius the AreopagiteDivine Names; Mystical Theology; Celestial Hierarchy; Ecclesiastical Hierarchy; Letters (tr. Parker, 1897)
- St. John ClimacusThe Ladder of Divine Ascent (tr. Lazarus Moore, 1959)
- St. Isaac of Nineveh (Isaac the Syrian)Mystic Treatises (tr. Wensinck, 1923)
- St. Nilus of SinaiOn Prayer (seed selection)
- St. Maximus the ConfessorCenturies on Love; Ambigua (seed selections)
- St. Symeon the New TheologianDiscourses (Catecheses); Hymns of Divine Love (seed selections)
- St. Gregory PalamasTriads in Defence of the Holy Hesychasts (seed selections)
- St. John of KronstadtMy Life in Christ (tr. Goulaeff, 1897)
- St. Nikolai VelimirovicPrologue from Ohrid (ochrid.com tr., CC BY-SA 4.0)
- St. Bede the VenerableEcclesiastical History of the English People (tr. Sellar, 1907)