Two Different Foundations: Sola Scriptura

2 Timothy 3:15-17 Kevin DeYoung
Thesis Scripture alone is the supreme judge in all matters of faith and practice, while all other authorities—councils, theologians, traditions, and experiences—serve as witnesses to be evaluated by Scripture's final verdict.
Series
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Type
Topical
Tone
didacticpolemicpastoral
Method
grammatical-historicalcanonical
What's in this sermon

The shape of the argument

28 units across exposition, application, illustration, theological claim, and conclusion. The pastor's argument is built from these moving parts.

Pastoral correction · unit #26
"DeYoung moves from defense to indictment, arguing that the denial of sola scriptura has produced fruit: biblical illiteracy and shallow biblical teaching in the Catholic church. He cites Peter Kreeft's admission that Protestants are superior in sermons, hymns, and biblical familiarity. The application turns personal and urgent: what is at stake is not just who has the final say, but whether Scripture will have much of a say at all in our churches and lives. This is the sermon's climactic charge."
Doctrinal loci· 6 surfaced
Bibliology · 24 Ecclesiology · 9 Christology · 3 Covenant Theology · 1 Ethics / Moral Theology · 1 Theology Proper · 1
Bible citations· 13
2 Timothy 3:16 | 2 Timothy 3:17 | 2 Timothy 3:15 | Joshua 1:8 | Matthew 4 | Acts 17 | Matthew 15:16 | Matthew 15:9 | John 10:35 | Revelation 22:18-19 | Deuteronomy 4:2 | 1 Corinthians 11:19
Illustrations· 3
  1. analogy · unit #4 — DeYoung uses a Catholic analogy (acorn to oak) to illustrate how Catholic theology justifies doctrinal development beyond Scripture, then cites Peter Kreeft to establish that even Catholic apologists recognize sola scriptura as the fundamental dividing issue between Protestantism and Catholicism. The illustration serves to show how deeply the disagreement runs.
  2. cultural reference · unit #19 — DeYoung uses a recent news story to illustrate the internal division within the Catholic church—a priest welcoming an openly gay couple despite official Catholic teaching against same-sex marriage. The illustration vividly demonstrates that the magisterium has not actually produced doctrinal or practical unity. The point is not to gloat but to show that the problem the magisterium claims to solve persists within Catholicism itself.
  3. analogy · unit #24 — DeYoung uses an extended analogy of a child reuniting with his family to illustrate the canon formation process. Just as the child recognizes (but does not create) his family members, so the church recognized (but did not create) the canonical books. The analogy makes vivid the self-authenticating nature of Scripture and the recognition process by which the church received the canon.
Theological claims· 9
  1. There are four kinds of witnesses that may testify in religious controversies—councils, ancient writers, human doctrines, and private spirits—but Scripture alone judges them all and gets the last word in every matter of faith and practice. unit #1
  2. The Roman Catholic Church affirms Scripture as inspired and infallible but denies it unique and final authority, placing it on equal footing with sacred Tradition rather than in judgment over it. unit #2
  3. Scripture is norma normans (the rule that rules), while creeds and councils are norma normata (the rule that is ruled)—Scripture judges all other authorities without itself being subject to judgment by them. unit #5
  4. The objection that no one taught sola scriptura before Martin Luther is historically false. unit #13
  5. The church fathers explicitly taught that canonical Scripture alone was unerring and to be followed unreservedly—the Council of Trent's equal elevation of tradition contradicts the church fathers it claims to represent. unit #14
  6. The objection that Protestant division proves the need for a magisterium fails because (1) not all division is schism, (2) Protestant denominations share fundamental unity, and (3) the Catholic church has just as much internal division despite the magisterium. unit #18
  7. The problem of interpretive disagreement is universal to human discourse—the Catholic magisterium has not solved it but only moved it from the interpretation of Scripture to the interpretation of papal pronouncements. unit #20
  8. The objection that the church must be infallible because it gave us the canon misunderstands the nature of biblical authority and the historical process of canon formation. unit #21
  9. Throughout redemptive history, the word of God always forms the people of God—the people never form or create the word, so the church cannot be the source of Scripture's authority. unit #25
Quotations· 14
"The supreme judge by which all controversies of religion are to be determined and all decrees of councils, opinions of ancient writers, doctrines of men, and private spirits are to be examined and whose sentence we are to rest can be no other than the Holy Spirit speaking in the Scriptures." — Westminster Confession of Faith 1.10 (unit #0)
"The church, to whom the transmission and interpretation of revelation is entrusted, does not derive her certainty about all revealed truths from the holy Scriptures alone. Both Scripture and Tradition must be accepted and honored with equal sentiments of devotion and reverence." — Catholic Catechism (unit #3)
"Most Protestants reject all the Catholic doctrines they cannot find explicitly in Scripture – for example, Mary's assumption into heaven – because they believe sola scriptura, that Scripture alone is the infallible authority. This is the fundamental reason behind all the differences between Protestant and Catholic theology." — Peter Kreeft (unit #4)
"They are charging me with innovation and base their charge on my confession of three hypostases and blame me for asserting one goodness, one power, one godhead. In this, they are not wide of the truth, for I do so assert. Their complaint is that their custom does not accept this and that Scripture does not agree. What is my reply? I do not consider it fair that the custom which obtains among them should be regarded as a law and rule of orthodoxy. If custom is to be taken in proof of what is right, then it is certainly competent for me to put forward on my side the custom which obtains here. If they reject this, we are clearly not bound to follow them. Therefore, let God-inspired Scripture decide between us, and on whichever side be found doctrines in harmony with the word of God, in favor of that side will be cast the vote of truth." — Basil of Caesarea (unit #15)
"I have learned to give this reverence and honor to those books of Scripture alone which are called canonical." — Augustine (unit #16)
"I do not suppose that you wish your books to be read as if they were the writings of the prophets or apostles, which beyond a doubt are free from any error." — Augustine (unit #16)
"We ought not to consider the disputations of any men, though they be Catholic and praiseworthy men, as canonical Scriptures." — Augustine (unit #16)
"In the innumerable books that have been written lately, we may sometimes find the same truth as in Scripture, but there is not the same authority. Scripture has a sacredness peculiar to itself. In other books, the reader may form his own opinion and, perhaps from not understanding the writer, may differ from him and may pronounce in faith of what pleases him or against what he dislikes. In such cases, a man is at liberty to withhold his belief unless there is some clear demonstration or some canonical authority to show that the doctrine or statement either must or may be true. But in consequence of the distinctive peculiarity of the sacred writings, we are bound to receive as true whatever the canon shows to have been said by even one prophet or apostle or evangelist." — Augustine (unit #16)
"We dare not judge them in any way; rather, we use them to judge freely concerning other writings whether of believers or unbelievers." — Augustine (unit #17)
"I am not bound by the authority of this letter, since I do not consider Cyprian's letters to be canonical, but I weigh them against the canonical writings, and what agrees in them with the authority of the divine Scriptures, I accept in his praise, but what does not agree, I reject in his peace." — Augustine (unit #17)
"Gio Benitez, openly gay ABC News Weekend anchor, joins Catholic church and reaffirms faith with his husband by his side." — People magazine (unit #19)
"pervasive interpretive pluralism" — Christian Smith (unit #20)
"The church no more gave us the New Testament canon than Sir Isaac Newton gave us the force of gravity." — J.I. Packer (unit #23)
"Protestants are superior to Catholics in three things: sermons, hymns, and familiarity with the Bible." — Peter Kreeft (unit #26)
Read it

Full transcript

33,104 characters 28 units ~37 min reading time

0 · DeYoung frames the sermon by defining sola scriptura through the Westminster Confession, establishing a crucial distinction between Scripture as judge versus other sources as witnesses

Let me give a one-sentence summary of the doctrine of sola scriptura – Scripture alone. It comes from Westminster Confession of Faith 110:

"The supreme judge by which all controversies of religion are to be determined and all decrees of councils, opinions of ancient writers, doctrines of men, and private spirits are to be examined and whose sentence we are to rest can be no other than the Holy Spirit speaking in the Scriptures."

Notice the Confession does not say Scripture is the only witness to which we can appeal. Notice it uses the language of judge, and I commend this distinction to you. When we talk about Scripture alone, we don't mean that the Bible is the only thing we could ever talk about or the only thing we could bring to bear upon theological discussion. After all, I just started with a man-made confession of faith. The reformers took great pains to show that the things they were teaching were not new or novel – perhaps forgotten, but not entirely new. And they, too, respected the church fathers. So, the distinction here is between a witness and a judge. We bring traditions. We bring theologians. We bring creeds and councils. We bring church fathers. We would bring reformers to the witness stand, and we take seriously their witness. But there is only one supreme judge, sola scriptura teaches us, and that is Scripture.

1 · DeYoung enumerates four categories of non-scriptural authority that the Westminster Confession acknowledges as legitimate witnesses but subordinate to Scripture's judicial role

The confession lists four kinds of testimony. So, think about four witnesses that you might bring before the stand when you of some religious controversy – four kinds of witnesses over which Scripture is supreme. One, councils. Two, ancient writers. Three, human doctrines. And four, private spirits. That means feelings, experiences, claims of divine prompting, or revelation. Those things are not irrelevant. You may bring them to the bar to be a witness, but Scripture is a judge over each of them as they give testimony. In every matter of faith and practice, Scripture gets the last word.

2 · DeYoung clarifies the precise point of disagreement between Protestant and Catholic theology: not whether Scripture is authoritative or inspired, but whether it is the supreme judge or merely one of two equally authoritative sources

Now, you may say, isn't that what all branches of the church believe? It is not, however, what the Roman Catholic Church believes. The Catholic Catechism – I forgot to bring a copy, but it's a big, thick book – teaches that the deposit of faith includes two things: sacred Scripture and sacred Tradition. And they put that in capital letters. This is tradition with a capital T. This means that Scripture is not the supreme judge, but rather an equally authoritative source of doctrine along with the official teaching of the church. So, Scripture's authority – it has authority, let's be fair – in Catholic doctrine, Scripture is authoritative. However, its authority is not alone. It stands alongside capital T Tradition. Roman Catholic theology affirms an inspired Bible. If you read the Catechism, it affirms an infallible Bible. What it does not believe is in a Bible with unique and final authority.

3 · DeYoung presents verbatim Catholic teaching alongside Protestant teaching to demonstrate the fundamental incompatibility

Let me quote from the Catholic Catechism: "The church, to whom the transmission and interpretation of revelation is entrusted, does not derive her certainty about all revealed truths from the holy Scriptures alone. Both Scripture and Tradition must be accepted and honored with equal sentiments of devotion and reverence." So, take what the Catholic Catechism says, put it next to what the Westminster Confession says, and you see what this debate is about. Westminster Confession says Scripture is the supreme judge. Catholic Catechism says Scripture and Tradition must be "accepted and honored with equal sentiments of devotion and reverence."

4 · DeYoung uses a Catholic analogy (acorn to oak) to illustrate how Catholic theology justifies doctrinal development beyond Scripture, then cites Peter Kreeft to establish that even Catholic apologists recognize sola scriptura as the fundamental dividing issue between Protestantism and Catholicism

So, when we, as Protestants – and if you're not a Protestant here, we're glad that you're here to listen and learn – we may scratch our heads and say, "Where do these doctrines come from? They're nowhere to be found in the Bible." A Catholic theologian might say, "Well, if you look at a mighty oak tree, and it comes from an acorn, you don't question when you're staring at the acorn that it might grow into something much more expansive and magnificent. And so are the doctrines of the Catholic Church, because Scripture and Tradition stand side by side."

Peter Kreeft – maybe some of you have read his books – he's a prolific, popular Catholic author, well into his 80s now. I've read a number of his books. He's a very good author. Catholic. He grew up in the Reformed Church in America like I did. He has a new autobiography out called From Calvinist to Catholic. You can look it up. I did a brief review of the book for First Things, which is a Catholic journal. They asked me to do it. It was nice. I said, "I'll be friendly, but I'm going to be clear, because my story is from Calvinist to more Calvinist." Peter Kreeft has an earlier book, which I've consulted often, called Catholic Christianity, and it's really a devotional explanatory commentary on the Catholic Catechism. What Chad Van Dixhoorn does for the Westminster Confession, Peter Kreeft has done for the Catholic Catechism. It's a helpful entry point. Here's what he says: "Most Protestants reject all the Catholic doctrines they cannot find explicitly in Scripture – for example, Mary's assumption into heaven – because they believe sola scriptura, that Scripture alone is the infallible authority. This is the fundamental reason behind all the differences between Protestant and Catholic theology." I agree with him. The primary disagreement, and the one on which the others depend, is this question: whether Scripture is the authority on all matters of faith and practice, or whether Scripture is an authority, on par with the dogmatic tradition of the church and the authoritative pronouncements of the pope.

5 · DeYoung introduces the technical Latin distinction between norma normans and norma normata to capture the Protestant understanding of authority hierarchy

Let me give you a Latin phrase perhaps you haven't heard, along with all these other Latin phrases from the Reformation. As Protestants, we believe that the Bible is the norma normans. So, if you are here and you're a Norma or a Norman, this is a special night for you. You know what that means – a Latin term – a norm, a rule. So, the Bible is the norma normans. That means "the rule that rules," while creeds and councils and church fathers ought to be considered the norma normata – that is, "the rule that is ruled." You see the difference. Scripture is a rule, which is ruled by none. Creeds, councils – we've celebrated the Nicene Creed, we recite the Apostles' Creed, we appeal to ancient and modern authorities. But those are always rules that are to be ruled by Scripture.

Where this fits

More from Kevin DeYoung

The other sermons stewarded in this Kevin DeYoung set.

The gospel is not a message to be ashamed of because it is the very power of God that saves everyone who believes, Jew and Gentile alike.
Romans 1:16
Genesis 3 introduces the fundamental patterns and problems that the entire biblical story exists to resolve, culminating in Christ's work that reverses the curse and restores humanity to God's presence.
Genesis 3
This sermon
Two Different Foundations: Sola Scriptura
Scripture alone is the supreme judge in all matters of faith and practice, while all other authorities—councils, theologians, traditions, and experiences—serve as witnesses to be evaluated by Scripture's final verdict.
2 Timothy 3:15-17
Take it further

Discuss · apply · pray

Daily readings · Monday–Friday

5-day reading plan

This week we trace sola scriptura from its biblical foundation through the church's historical witness, confronting objections and arriving at its transformative application: Scripture alone judges all authorities, and this recovery of biblical supremacy calls us to renewed devotion to God's Word.

Monday 2 Timothy 3:16

Paul's declaration that Scripture is God-breathed and profitable for teaching, reproof, correction, and training establishes the foundation: God's Word carries an authority that nothing else possesses. We begin here because the doctrine of sola scriptura rests not on preference or custom, but on the nature of Scripture itself—it is the very breath of God, and therefore it alone can authoritatively judge what is true and what is false in all matters touching faith and obedience.

Tuesday Deuteronomy 4:2

The Lord's command to neither add to nor diminish His word reveals the permanent boundary that God Himself draws around Scripture's authority. This principle, echoed at the close of Revelation, shows us that from Moses through the apostles, God's people have always understood there is a fixed, inviolable deposit that rules over all interpretation and innovation. We cannot place tradition on equal footing with Scripture without violating this ancient guardrail.

Wednesday John 10:35

Our Lord's appeal to Scripture ("the Scripture cannot be broken") shows that Jesus Himself treated the written Word as unassailable—and this conviction marked the apostolic and early patristic mind as well. The Council of Trent's later elevation of tradition to equal standing with Scripture does not represent a retrieval of ancient practice but a departure from it; the fathers DeYoung cites understood that canonical Scripture alone was the final arbiter, and all other voices—however wise—remained witnesses subject to that judgment.

Thursday Matthew 15:6–9

Jesus confronts the Pharisees for using human tradition to invalidate God's Word, showing that when we elevate any authority to equal standing with Scripture, the inevitable result is that Scripture's voice grows faint and its commands are nullified in practice. The denial of sola scriptura bears poisonous fruit: biblical illiteracy spreads through congregations, preaching grows thin, and God's people lose the very nourishment their souls require. What we are defending, then, is not an abstract principle but the living vitality of God's Word in the church.

Friday Joshua 1:8

Joshua's commission—to meditate on God's Word day and night and observe all it contains—captures the practical fruit of sola scriptura: a people who know God through His Word, who are shaped by it, and who find in it the wisdom and power for faithful living. We recover this doctrine not to win theological arguments but so that we, like Joshua, might be strengthened and courageous, grounded in the sure Word that never fails. The supremacy of Scripture in our belief must become the supremacy of Scripture in our devotion.

Memory verse this week

2 Timothy 3:16-17

All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work.

Why this verse: This verse is the theological foundation of sola scriptura itself—it establishes Scripture's divine origin and comprehensive sufficiency for faith and practice, making it the supreme judge in all matters of religion. Memorizing it anchors the entire doctrine by keeping the believer rooted in Scripture's own claim to be the final, authoritative word from God.

Small-group discussion

6 questions for your group this week

  1. In 2 Timothy 3:16-17, Paul tells Timothy that Scripture is 'able to make you wise for salvation' and 'competent, equipped for every good work.' What does it mean practically that Scripture alone—rather than Scripture plus tradition, councils, or expert interpretation—is what equips us for these things?
    2 Timothy 3:16-17
    → Can you think of a time when you've had to decide between what Scripture says and what some other authority claimed? How did you know which to trust?
  2. The sermon establishes that there are 'witnesses' in matters of faith—councils, ancient writers, theologians, personal conviction—but that Scripture alone is the 'judge' that gets the final word. How does this distinction between witnesses and judge change the way we should approach church tradition or the insights of trusted Christian teachers?
  3. One of the fallen condition focuses in this sermon is that when sola scriptura is denied or weakened, Scripture itself becomes marginalized—people may honor it officially while effectively ignoring it in practice. Where do you see this happening in the church today, whether in Catholic, Protestant, or evangelical contexts?
    → What would change if your church or community truly treated Scripture as the supreme judge in matters of faith and practice?
  4. The sermon notes that the objection 'no one taught sola scriptura before Luther' is historically false—the church fathers themselves affirmed that canonical Scripture alone was 'unerring and to be followed unreservedly.' Why do you think this historical claim matters for our confidence in this doctrine today?
    Matthew 15:9
  5. Throughout redemptive history, the word of God always forms the people of God—the people never form the word. How does this reality, rooted in the gospel itself, free us from the anxiety that the church might be unstable or unreliable if it doesn't have a final human interpreter (like a magisterium)?
    → What does it mean for your own walk with Christ to trust that God's Word—not any human institution or person—is the measure of all things?
  6. The sermon teaches that in the gospel, we have a Savior who is Himself 'the Word made flesh' and who confirmed the authority of Scripture (John 10:35). How should this christological foundation shape the way we submit to Scripture's authority in our own lives this week—not as a burden imposed from outside, but as a grace-enabled response to Christ's lordship?
    John 10:35
Couples · three questions over coffee

Scripture as Judge: What Does It Mean for Us?

  1. What part of this sermon challenged or convicted you personally about how much authority you actually give Scripture in your own life and decisions?
  2. Are there areas in our marriage where we've leaned on culture, personal preference, or someone else's authority instead of asking what Scripture says—and how might we shift that together?
  3. How can we pray for each other this week to more gladly submit to Scripture's final word, and to help one another when we're tempted to listen to other voices instead?
Sunday-evening family table

Who Gets the Last Word?

For the parent

This prompt invites your family to think about authority and decision-making in a way kids can grasp concretely before moving to Scripture's role. Listen for how they think about who should have final say, then gently guide toward how that mirrors what the sermon taught about Scripture.

If you and a friend couldn't agree on the rules of a game, and you both had different people you trusted—your mom, your coach, a book with the official rules—who should get to decide what the real rules actually are? Why that person or thing and not the others?
works for ages 7+
Where this was preached

About the preacher

Kevin DeYoung
Christ Covenant · Matthews, NC
Read the Guild Hall profile · All three stewarded sermons
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# Christ Covenant · Matthews, NC

Significant sermons by Kevin DeYoung, stewarded by Sermon Steward as a sample.

## Sermons
- [Unashamed of the Gospel (Romans 1:16)](/SignificantSermons/deyoung/sermons/unashamed-of-the-gospel)
- [The Whole Big Story for the Bible (Genesis 3)](/SignificantSermons/deyoung/sermons/the-whole-big-story-for-the-bible-2025-12-29)
- [Two Different Foundations: Sola Scriptura (2 Timothy 3:15-17)](/SignificantSermons/deyoung/sermons/two-different-foundations-sola-scriptura)

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