Published: July 17, 2026 | thefinalconvergence.com
One post remains after this one. Tomorrow the series closes and Biblicism: The Faith Once Delivered launches. Today, the heart of the argument. The single most important claim the book makes. The claim that is simple enough to state in one sentence and demanding enough to require thirteen chapters and five appendices to develop fully.
The claim:
Sola Scriptura, properly understood, is Biblicism. And the confessionalist tradition that uses Biblicism as a slur has built a Protestant Magisterium, with the Westminster Assembly instead of the Council of Trent, with the confession instead of papal decree, with the tradition of Calvin and Owen instead of the tradition of Aquinas and Trent, and called it Sola Scriptura.
The Protestant Magisterium
The word Magisterium, the teaching authority of the Roman Catholic Church, as embodied in the Pope and the College of Bishops, names a specific structure: a human institution whose interpretation of Scripture is binding on the community that acknowledges its authority, and whose interpretive decisions cannot be overridden by the plain text of the Scripture it claims to interpret. That structure, human institution, binding interpretation, plain text cannot override, is not unique to Rome. It has been reproduced within Protestant confessionalism.
The Westminster Assembly met in the mid-seventeenth century, 121 ministers, 30 lay commissioners, 8 Scottish commissioners, and produced, over five years, the Westminster Confession of Faith, the Larger Catechism, and the Shorter Catechism. These documents have governed the confessional Presbyterian and Reformed tradition for nearly four centuries. They are, in many respects, remarkable achievements of theological precision. The men who produced them were learned, godly, and genuinely committed to accurately summarizing what the Scripture teaches.
But in the communities that have received them as binding confessional standards, they function precisely as the Magisterium functions in Rome: the confession’s interpretation of a biblical text is the governing interpretation, and the individual or community that arrives at a reading that conflicts with the confession is required to conform their reading to the confession rather than being invited to examine the text together.
The structure is identical. Only the human institution has changed.
The Test That Reveals the Difference
Five questions. Honest answers to all five reveal whether a community is practicing Sola Scriptura or Sola Confessio.
Question One: If the plain reading of a biblical text produces a conclusion that differs from your confession’s formulation, does your community examine the text together and evaluate whether the confession has accurately represented it, or does the confession close the question?
Question Two: Is there any position your tradition currently holds; any doctrine, any practice, any interpretive conclusion, that you would be willing to revise if the plain text of Scripture, carefully and honestly read, required it?
Question Three: Does the Berean test of Acts 17:11 apply to your confession? Are you encouraged, the way the Bereans were called noble, to search the Scriptures to test whether what the confession says is so?
Question Four: When a teacher in your community is corrected not by the plain text but by the confession, “that reading is outside the bounds of our confessional standards”, is that correction understood as the Word’s correction or as the tradition’s correction?
Question Five: In your community’s theological formation; in the preaching, the teaching, the small group studies, is the student being formed in the Word itself, or in the Word as the confession has organized and interpreted it?
The community that can answer questions one through five honestly, and whose answers reveal that the text is genuinely the final court of appeal, that the confession is genuinely a servant, that the Berean test is genuinely welcomed, is practicing Sola Scriptura.
The community whose honest answers reveal that the confession governs the reading, that the Berean test stops at the confessional boundary, that revising a confessional position is practically unthinkable, that community is practicing Sola Confessio.
The doctrinal label may be the same. The functional reality is the difference between the Word as the supreme authority and a human system as the governing interpreter.
What the Reformers Would Recognize
The most historically significant aspect of the Biblicism argument is not the critique of the contemporary confessionalist practice. It is the evidence that the Reformers themselves held the biblicist position, and that their heirs have departed from it.
Luther: “A council may err. A pope may err. My conscience is captive to the Word of God.” The logic of this is explicitly biblicist. Luther is not saying: my conscience is captive to the confessional tradition that accurately summarizes the Word. He is saying: the Word. Directly. Against every human institution, including the institution he was in the process of founding.
Calvin: “We owe to Scripture the same reverence which we owe to God, because it has proceeded from Him alone, and has nothing belonging to man mixed with it.” Nothing belonging to man mixed with it. The Word as pure from human admixture, which means the confession, however accurate, has something belonging to man mixed with it. The reverence owed to Scripture is not owed to the document that summarizes it.
Zwingli: “The word of God must be paramount. If you call upon the Word of God, away with everything that does not harmonize with it.” Everything. Not: away with everything that does not harmonize with the confession. Everything that does not harmonize with the Word. The Word is the standard. Not the Reformed tradition’s summary of the Word.
These men founded the tradition the confessionalists claim. Their stated principle is the biblicist principle. The confessionalist practice is the departure.
The Test That Ends Every System
The verse that ended the charismatic framework in the personal testimony of this series is the verse at the center of the Biblicism argument. “To the law and to the testimony: if they speak not according to this word, it is because there is no light in them” (Isaiah 8:20).
Isaiah gave this standard to those consulting mediums and spiritists. But its logic is universal. The test is the Word. Every voice; prophetic, apostolic, Magisterial, confessional, is measured by it. If it speaks not according to the Word, no light.
The charismatic world failed this test when its prophetic declarations were measured against the plain text. Rome fails this test when its Magisterial tradition is measured against the plain text. And confessionalism, in its most consistent expressions, fails this test when the confession is permitted to govern what the plain text is allowed to mean.
The test does not change. The Word does not change. The standard is the same for every system, every tradition, every community that claims to stand on the Bible.
Nobody gets a pass.
The Pastoral Intention
Let me be precise about what the Biblicism argument is not.
It is not an attack on the Reformed tradition. The doctrinal content of the Westminster Confession is largely faithful to the Scripture it summarizes. The theological instincts of the confessionalist tradition, its rigorous engagement with the text, its commitment to doctrinal precision, its resistance to theological sentimentalism, are instincts to be honored and preserved.
It is not a call to abandon the community of the church in favor of individual Bible reading. The Berean congregation was a community. Biblicism is practiced in community, tested in community, and accountable to community.
It is not a call to dismiss the centuries of Reformed scholarship and exposition that have illuminated the meaning of the text. Every legitimate tool for understanding the sufficient Word should be used by the person who wants to understand it accurately.
The Biblicism argument is a call to consistency. To hold the stated principle, Sola Scriptura, with the same seriousness when applied to your own tradition that you hold it when applied to Rome or the NAR. To apply the Berean test universally rather than selectively. To treat the confession as what its framers intended it to be, a fallible human summary of the infallible Word, rather than as a governing interpretation that cannot be questioned.
It is, in the deepest sense, a call home. Home to the principle the Reformers embodied. Home to the Word that stands above every human system. Home to the simple, demanding, liberating conviction that Luther expressed at Worms and that Tyndale expressed with his life: The Word alone. Against everything else, if necessary. Because the Word is what it claims to be. And nothing else is.
Tomorrow, the series closes. Biblicism launches. And the next question on this platform begins.
“To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.” — Isaiah 8:20 KJV
📖 This post is adapted from Why I Believe the Bible: A Personal Defense of Sola Scriptura. If it helped you, the full book is available on Amazon — or you can support this ministry directly.
📖 Biblicism: The Faith Once Delivered — launching tomorrow — Book 4
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