Christianity Decoded

Christianity Decoded describes the tradition historically and descriptively: how a first-century Jewish movement became a world religion, and how it divided along the way.

It covers the canon and how it was settled, the ecumenical councils and the doctrines they defined, the East–West schism and the Reformation, and the major denominational families as they exist now.

Where denominations disagree, the site sets out each position rather than adjudicating between them.