Section 06: Christology
The theological core of the St. Cyril of Alexandria compendium. Where the earlier sections narrate the controversy, this section sets out the doctrine that drove it: the “one incarnate nature of the Word” (mia physis) and the Apollinarian forgery behind it; the hypostatic union that was Cyril’s true centre; the near-synonymy of physis and hypostasis that both matched and diverged from Chalcedon; the communicatio idiomatum; and theopaschism from the Twelfth Anathema to its vindication at Constantinople II (553). Its second file is the flagship both-sides treatment (per Methodology §4) of how both the Chalcedonian Eastern Orthodox and the Oriental Orthodox claim Cyril as their common Father.
Tradition: Pan-Orthodox (Church Father)
Contents
| File | Title | Scope |
|---|---|---|
| mia-physis-and-hypostatic-union.md | Mia Physis and the Hypostatic Union | The mia physis formula and its Apollinarian provenance; van Loon’s corrective that it was never Cyril’s favourite phrase; the hypostatic union (henosis kath’ hypostasin) as his real centre; the physis/hypostasis terminological problem and how Chalcedon matched and diverged; the communicatio idiomatum; theopaschism from the Twelfth Anathema (430) through the 519 controversy to vindication at 553; the neo-Chalcedonian retrieval. |
| chalcedon-and-the-non-chalcedonians.md | Chalcedon and the Non-Chalcedonians | Flagship §4 both-sides file. How both Chalcedonian and Oriental Orthodox claim Cyril; the load-bearing miaphysite/monophysite distinction; Severus of Antioch’s Cyrilline anti-Chalcedonianism; the terminological problem as the root of the split; the 1989 Anba Bishoy and 1990 Chambésy Agreed Statements and their Cyrilline common ground; both sides of the Eastern Orthodox reception (the Athonite/Russian objections vs. the dialogue’s conclusion), taken without a partisan verdict; the net result that the anathemas were never formally lifted and communion was not restored. |
How to Use
- Read Mia Physis and the Hypostatic Union first. It establishes Cyril’s own categories — physis, hypostasis, the hypostatic union, the communication of properties — which the second file then presupposes.
- Then read Chalcedon and the Non-Chalcedonians. As the flagship both-sides file, it applies the terminological analysis of the first file to the schism, and it deliberately renders no verdict on the contested Eastern Orthodox reception: both sides are sourced and named.
- Throughout, note the disciplines of Methodology: Cyril is cited by work, division, verified PG column, and translation; contested datings (e.g. Leontius of Jerusalem) and contested judgments (e.g. the identity of the miaphysite and Chalcedonian confessions) are flagged as disputed rather than resolved.
Cross-References
- The Twelve Anathemas — the theopaschite Twelfth Anathema whose theology this section unfolds.
- Theotokos and the Dispute — the Marian title grounded in the communicatio idiomatum.
- Reconciliation with Antioch and The Cost of Peace — the 433 Formula and the “two natures” language Cyril accepted.
- The Aftermath — the tensions that issued in the later schism.
- Eucharistic Theology — the life-giving flesh that the hypostatic union makes possible.
- Theosis — the salvific telos of the union of God and man in Christ.
- Ecumenical Councils and Church Fathers — the conciliar and patristic framework.
- For later Chalcedonian synthesis, see St. Maximus the Confessor and St. John of Damascus; for an earlier holder of Cyril’s see, St. Athanasius.
References
Full primary- and secondary-source citations are given at the foot of each content file. The principal primary texts are Cyril’s On the Unity of Christ (PG 75; CPG 5228), Scholia on the Incarnation (PG 75; CPG 5225), Five Tomes against Nestorius (PG 76; CPG 5217), and the Letters to Nestorius (PG 77), read against the councils of Chalcedon (451) and Constantinople II (553). The governing method for the flagship both-sides handling in the second file is Methodology §4.