Church History
From Pentecost to the present — the key periods, figures, councils, and events that shaped Christianity across two thousand years of God's providential work.
The Apostolic and Patristic Age
The church was born at Pentecost (Acts 2) and spread through the Roman Empire despite fierce persecution under emperors like Nero, Domitian, and Diocletian. During this period the canon of Scripture was recognized, key doctrines were defined against heresies (Arianism, Gnosticism, Docetism), and the first great ecumenical councils (Nicaea 325, Constantinople 381, Ephesus 431, Chalcedon 451) established the orthodox understanding of the Trinity and the person of Christ.
The Early Church established the doctrinal foundations — Trinity, Incarnation, Scripture — that all orthodox Christianity builds upon. Its martyrs demonstrated that the gospel was worth dying for, and its theologians gave it intellectual depth.
Key Events
Key Figures
Early bishop martyred under Trajan; letters affirm the deity of Christ and the authority of bishops.
Refuted Gnosticism in 'Against Heresies'; developed a coherent doctrine of Scripture and canon.
'Athanasius contra mundum' — defended Nicene orthodoxy (full deity of Christ) against Arianism through decades of exile.
Towering theologian whose works on grace, sin, the Trinity, and the City of God shaped Western Christianity for a millennium.