What Lutherans Believe: The 21 Articles of Faith Explained

The Augsburg Confession is divided into two parts. The first part — 21 articles of faith — sets out what Lutherans positively believe. The second part — 7 articles on abuses — explains what practices they had reformed. Here is a guided tour through the doctrinal heart of the document.

Articles I–III: The Foundation

The Confession opens by affirming the Nicene doctrine of the Trinity (Article I) — establishing that Lutherans are not theological innovators but stand in continuity with the universal church. Article II teaches original sin: all people are born without fear of God, with disordered desires, and this condition is genuinely sinful, not merely a weakness. Article III confesses the full Chalcedonian Christology: the Son of God assumed human nature in the Virgin Mary, is truly God and truly man, and died to reconcile us to the Father.

Article IV: Justification — The Center of Everything

Article IV is the theological heart of the Confession — and of the Reformation. It declares that men cannot be justified before God by their own strength, merits, or works, but are freely justified for Christ's sake through faith. God imputes this faith as righteousness. This single article was the most contested point between Luther and Rome, and it remains the defining distinctive of Lutheran theology.

Articles V–XV: Church, Sacraments, and Ministry

The middle articles cover the practical life of the church. The ministry of Word and Sacrament is instituted by God to create faith (V). The new obedience that flows from faith is genuine but does not merit salvation (VI). The church is defined by right preaching and right sacraments, not by bishops or ceremonies (VII). Baptism is necessary and effective for children (IX). The Lord's Supper truly contains Christ's body and blood (X).

Articles XVI–XXI: Civil Life and the Saints

The later articles address areas of particular controversy. Civil government is a legitimate divine institution and Christians may serve in it (XVI). Christ will return for judgment (XVII). Free will exists in external matters but not in spiritual ones — only the Holy Spirit can turn a heart to God (XVIII). Good works are necessary — not to earn grace, but because they are God's will (XX). The veneration of saints as mediators is rejected, though they may be honored as examples (XXI).

A Whole Theology in 21 Articles

What is remarkable about the 21 articles is how much theological territory they cover in relatively few words. Melanchthon was not writing a systematic theology — he was writing a confession: a public, personal, urgent declaration of what the church believes and teaches. Reading these articles, you encounter not an academic exercise but a living faith under pressure, stated with clarity and courage.