Clement of Rome
The First Epistle of Clement to the Corinthians
The earliest post-apostolic document asserting Roman pastoral authority — c. AD 96. 12 key chapters with annotations.
Ecclesiology
Petrine
The Priesthood
Sacraments
65 annotated chapters
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Ignatius of Antioch
Ignatius of Antioch — Letter to the Smyrnaeans
Contains the first use of Catholic Church in Christian literature, the clearest early statement on the Real Presence, and the most concentrated early treatment of episcopal authority — written en route to martyrdom, c. AD 107.
Ecclesiology
Petrine
Eucharist
Sacraments
10 annotated chapters
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Cyril of Jerusalem
Cyril of Jerusalem — Mystagogical Catecheses
Five post-baptismal lectures delivered at the Holy Sepulchre c. AD 350 — the most systematic early treatment of the sacraments, including the clearest patristic account of Real Presence and the Epiclesis.
Ecclesiology
Eschatology
Eucharist
Sacraments
9 annotated chapters
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Anonymous (Apostolic)
The Didache (Teaching of the Twelve Apostles)
The oldest surviving Christian catechism outside the New Testament — containing the earliest extra-biblical instructions for Baptism, the Eucharist, fasting, and church order. c. AD 50–120.
Ecclesiology
Eschatology
Eucharist
Sacraments
15 annotated chapters
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