Sola Scriptura

The Story

On October 31, 1517, when Martin Luther nailed his Ninety-Five Theses to the door of the Castle Church in Wittenberg (or, more likely, mailed them to his bishop), he was not initially challenging the authority structure of the church. He was complaining about indulgences. But within three years, the logic of his position had driven him to a far more radical claim: scripture alone is the final authority for Christian doctrine, and neither popes nor councils can bind the conscience of a believer when they contradict the Word of God.

This principle — sola scriptura — became one of the great rallying cries of the Protestant Reformation. Luther articulated it most dramatically at the Diet of Worms in 1521, when he refused to recant his writings unless convinced by scripture and plain reason. The Catholic authorities heard this as a direct assault on the church’s teaching office, and they were not wrong.

The principle did not mean what its critics often assume. Luther, Calvin, and the other major Reformers did not reject tradition entirely. They read the Church Fathers avidly, cited councils approvingly, and valued the creeds. What they rejected was the claim that tradition or papal authority could establish doctrines not grounded in scripture, or could override scripture’s clear teaching. Scripture was not the only source of theological wisdom, but it was the only infallible norm — the norma normans non normata (the norm that norms all other norms but is not itself normed by anything else).

The Catholic response came at the Council of Trent, which opened in 1545. Trent affirmed that divine revelation comes through both scripture and apostolic tradition, that these two sources are to be received “with equal affection of piety and reverence,” and that the church’s magisterium (teaching authority) is the authentic interpreter of both. To claim that scripture alone is sufficient was, in Trent’s judgment, to amputate half of God’s revelation and to leave interpretation to individual whim.

The debate has never been resolved. It has simply generated different churches. Protestants continue to affirm some version of sola scriptura (though they disagree fiercely about what it means in practice), while Catholics and Eastern Christians continue to insist that scripture cannot be properly understood apart from the tradition that produced and interprets it.

What the Council Actually Said

The Council of Trent’s Fourth Session (April 1546) decreed:

“The sacred and holy Council… receives and venerates with equal affection of piety and reverence, all the books both of the Old and of the New Testament — seeing that one God is the author of both — as also the said traditions, whether they relate to faith or morals, as having been dictated either by Christ’s own word of mouth or by the Holy Spirit and preserved in the Catholic Church by a continuous succession.”

Trent further declared:

“No one, relying on his own skill, shall presume to interpret the said sacred Scripture, in matters of faith and of morals pertaining to the edification of Christian doctrine, contrary to that sense which holy mother Church has held and does hold.”

This was a direct response to the Reformers’ insistence that individual believers, guided by the Spirit, could read and interpret scripture without deferring to the institutional church’s authoritative interpretation.

Why You Might Accidentally Believe This

If you are a Protestant, you almost certainly believe some version of this. It is so deeply woven into Protestant culture that many believers do not realize it was ever controversial. The instinct to say “but what does the Bible say?” in response to any theological claim, to treat scripture as the highest court of appeal, to be suspicious of traditions that lack explicit biblical warrant — all of these are expressions of sola scriptura.

Even many Catholics and Eastern Christians functionally operate this way in informal settings, reaching for their Bibles to settle disputes rather than looking up what a council or patriarch said. The Bible’s cultural authority in the English-speaking world has been shaped so profoundly by Protestant assumptions that sola scriptura often feels like common sense rather than a contested theological principle.

The Strongest Case For This View

The Reformers argued that scripture itself claims a unique authority. Paul commends the Bereans for checking his teaching against the scriptures (Acts 17:11). Jesus rebukes the Pharisees for nullifying the word of God through their traditions (Mark 7:13). 2 Timothy 3:16-17 declares that scripture is God-breathed and sufficient to make the person of God “complete, equipped for every good work.” If scripture makes you complete, what else do you need?

Historically, the Reformers could point to cases where tradition and papal authority had led the church astray — the sale of indulgences, the multiplication of extra-biblical requirements for salvation, the corruption of the papacy. If the church’s teaching authority could err so badly on matters of salvation, then some higher standard was needed to correct it. Scripture provided that standard.

The practical argument is also strong. Traditions multiply, contradict each other, and evolve. Different branches of the church hold different traditions, and there is no agreed-upon tradition about which traditions are binding. Scripture, by contrast, is a fixed text that can be translated, studied, and debated by anyone with access to it. It democratizes theology in a way that a priestly teaching office cannot.

The Strongest Case Against

The most potent objection is historical: the church existed before the New Testament. For decades after Christ’s ascension, Christians had no written Gospels, no letters of Paul, no book of Revelation. They had the apostles’ oral teaching, the community’s worship, and the Old Testament. The New Testament itself was produced by the church, selected by the church, and canonized by the church. To claim that scripture alone is authoritative while ignoring the tradition that identified which texts count as scripture seems self-undermining.

Furthermore, scripture itself does not teach sola scriptura. No biblical text says “scripture alone is sufficient; ignore tradition.” Paul tells the Thessalonians to hold to the traditions he passed on to them, “whether by our spoken word or by our letter” (2 Thessalonians 2:15) — explicitly placing oral tradition alongside written scripture. 1 Timothy 3:15 calls the church, not scripture, “the pillar and foundation of the truth.”

The practical result of sola scriptura has been a multiplication of competing interpretations. Protestantism has fragmented into thousands of denominations, each claiming biblical support for contradictory positions. If scripture alone were truly perspicuous (clear) on all essential matters, its critics ask, why can its readers not agree on baptism, the Lord’s Supper, predestination, church governance, or the role of women?

What the New Testament Actually Says

The New Testament’s own relationship to authority is more nuanced than either side typically admits. Jesus does appeal to scripture as authoritative (Matthew 4:4, 22:29). But he also claims personal authority that transcends scripture: “You have heard that it was said… but I say to you” (Matthew 5:21-22). The apostles exercise authority that is both rooted in scripture and independent of it — Peter’s vision in Acts 10 overturns longstanding scriptural food laws, and the Jerusalem Council in Acts 15 makes decisions about Gentile inclusion that go beyond any single text.

Paul’s letters claim apostolic authority (1 Corinthians 14:37) and also commend the received tradition (1 Corinthians 15:3, 2 Thessalonians 2:15). The New Testament appears to envision a complex interplay of scripture, apostolic teaching, Spirit-led community discernment, and the living authority of Christ’s appointed leaders — not a simple hierarchy with scripture alone at the top.

The honest reading is that sola scriptura is a theological principle drawn from scripture rather than a doctrine explicitly stated in it — which is either a feature or a bug, depending on where you stand.

Further Reading

• Martin Luther, On the Babylonian Captivity of the Church (1520)
• Council of Trent, Session IV, Decree on Sacred Scripture and Tradition (1546)
• Keith Mathison, The Shape of Sola Scriptura (2001)
• Yves Congar, Tradition and Traditions (1966)
• D.H. Williams, Evangelicals and Tradition (2005)