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Belief trail

How Christianity Got Here

Follow nine landmarks from Christianity’s shared beginnings to today’s ancient communions, church families, movements, and overlapping labels.

About 18 minutes9 historical landmarks
How to read this trail

This is one guided route through shared history, not a claim that one modern institution is the whole tree. Dates mark useful landmarks; many changes were gradual, regional, and disputed. The Atlas presents traditions from their own sources while disclosing its Reformed Baptist comparison perspective elsewhere.

Landmark 1 of 9One gospel, many local churches

Landmark 1 of 9: One gospel, many local churches

1st–early 4th centuries

Landmark 1 of 9

One gospel, many local churches

Christianity began with the apostles’ witness to Jesus and spread through connected but genuinely local communities.

Jesus’ first followers proclaimed his death and resurrection, baptized new believers, gathered for teaching and shared meals, prayed, and cared for one another. Communities formed around the Mediterranean and beyond. The New Testament already shows one faith being lived in places with different languages, leaders, and local questions.

Before legal recognition and long before modern denomination names, Christians read Scripture, confessed Jesus as Lord, and practiced baptism and the Lord’s Supper or Eucharist. Their patterns were not identical everywhere, and today’s ancient communions describe their continuity with this church in related but distinct ways.

What continued

The apostolic witness to Jesus, Scripture, baptism, shared worship, prayer, and care for the church remained central.

What changed

Rapid growth across cultures made questions about teaching, leadership, worship, and unity harder to settle only through face-to-face relationships.

Pause and notice

Which parts of this shared beginning are still visible across very different churches today?

Nothing is scored or saved.
Sources for this landmark
How Christianity Got Here · Belief Trails — Christianity Atlas