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I. APOSTOLIC Century. Page 1. The 1st Century AD, covering the lives of the Apostles and their immediate successors.
Contains 25 Ecclesiastical Writers.
1 Pagan.
II. GNOSTIC Century. p. 25. The 2nd Century, named for the rise of Gnosticism, a diverse movement of mystical religious ideas that the early Church Fathers fought to define as heresy.
66 Ecclesiastical Writers.
7 Pagans.
III. NOVATIAN Century. p. 63. The 3rd Century, named after Novatian, a scholar and priest who founded a rigorist sect over the issue of how to treat Christians who had lapsed during Roman persecutions.
42 Ecclesiastical Writers.
2 Pagans.
IV. ARIAN Century. p. 110. The 4th Century, dominated by the controversy surrounding Arius, who taught that Jesus was a created being rather than co-eternal with God the Father.
124 Ecclesiastical Writers.
8 Pagans.
V. NESTORIAN Century. p. 281. The 5th Century, named after Nestorius, whose views on the dual nature of Christ (human and divine) led to the Council of Ephesus.
201 Ecclesiastical Writers.
2 Pagans.
VI. EUTYCHIAN Century. p. 381. The 6th Century, named for Eutyches, a monk whose teachings on Christ's single nature sparked the Monophysite controversy.
120 Ecclesiastical Writers.
2 Pagans.
VII. MONOTHELITE Century. P. 440. The 7th Century, named for the Monothelite doctrine, which proposed that Christ had two natures but only one "will" or "energy."
85 Writers.
VIII. ICONOCLASTIC Century. P. 471. The 8th Century, defined by the struggle over the use of religious icons in worship, which led to widespread destruction of art and intense theological debate.
47 Writers.
IX. PHOTIAN Century. P. 503. The 9th Century, named for Photius the Great, Patriarch of Constantinople, whose conflict with the Pope was a major step toward the Great Schism between East and West.
125 Writers.
X. OBSCURE Century. P. 571. The 10th Century, historically termed the Saeculum Obscurum because of a perceived lack of prominent theological writers and the low moral state of the papacy at the time.
45 Writers.
XI. HILDEBRANDINE Century. P. 595. The 11th Century, named after Hildebrand (Pope Gregory VII), known for his sweeping reforms and the struggle for power between the Church and the State.
92 Writers.
XII. WALDENSIAN Century. P. 632. The 12th Century, named for the Waldensians, a pre-Protestant movement founded by Peter Waldo that emphasized poverty and preaching in the common tongue.
169 Writers.
XIII. SCHOLASTIC Century. p. 695. The 13th Century, the era of the Great Universities and the development of Scholasticism, a method of critical thought used by figures like Thomas Aquinas.
122 Writers.
XIV. WYCLIFFITE Century. p. 1. The 14th Century, named for John Wycliffe, the "Morning Star of the Reformation," who translated the Bible into English and challenged papal authority.
162 Writers.
XV. SYNODAL Century. P. 75. The 15th Century, marked by the era of the "Great Councils" (synods) such as Constance and Basel, which attempted to reform the Church from within.
189 Writers.
XVI. REFORMED Century. p. 191. The 16th Century, encompassing the Protestant Reformation led by Luther, Calvin, and others.