4th–7th centuries
Christian Authors after Nicaea
Attested teaching across five key theological topics
Theology of Christian authors 4th–7th century across five key topics
Only attested positions are recorded. Authors anathematized or declared heretical are marked ⚠, with notes where their views are rejected by Catholic or Orthodox tradition. “No record” means no extant text addresses that topic.
| Author | Veneration of icons | Real presence (Eucharist) | Salvation: faith + works | Veneration of Mary | Intercession of saints & Mary |
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Sources: authors' extant writings, conciliar acts, and near-contemporary historians (Socrates Scholasticus, Sozomen, Theodoret, Rufinus). Heterodox positions are those formally condemned by ecumenical councils or papal decree.
A few observations worth noting across this period:
The 4th–7th centuries are where most of the major doctrines become formally defined, which is why the evidence becomes much richer. Nearly every major orthodox figure attests all five topics positively by the 5th–6th centuries, whereas in the 2nd–3rd centuries you see the doctrines still developing.
On icons, the picture is more nuanced than it might appear. Several impeccably orthodox figures — Eusebius, Epiphanius, and Augustine — express caution or mild opposition. Icon veneration as a formally defined and defended doctrine really crystallises with Basil's theological principle, then reaches its fullest expression in John of Damascus, whose work was later ratified by the Second Council of Nicaea (787). The "Epiphanius problem" (an orthodox bishop who seemed iconoclast) was debated intensely during the iconoclast controversy.
On the heterodox figures, the pattern is interesting: most of the major heresies (Arianism, Nestorianism, Monophysitism, Monothelitism) are about Christology, not directly about the five topics you've listed. But because Christology underlies all five — what is received in the Eucharist? Who is Mary the mother of? — the Christological errors have downstream consequences for each topic, which I've tried to note.
Pelagius is the most directly relevant heterodox figure to the salvation topic, and his condemnation is specifically on that question rather than Christology.