Upon This Rock

I. Introduction: setting the question (3–4 minutes)

Matthew 16:16–18 KJV 1900

16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God. 17 And Jesus answered and said unto him, Blessed art thou, Simon Bar-jona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven. 18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.

Opening sentence

“Matthew 16:18 is one of the most disputed verses in the New Testament, because how we identify ‘the rock’ deeply shapes how we understand the church itself.”

State the problem clearly

Most people agree that Peter is central in this passage; Jesus singles him out, blesses him, and speaks directly to him.

The debate is whether Jesus is making Peter the ongoing foundation of the church in a way that supports a continuing Petrine office, or whether Peter’s God‑given confession is the decisive foundation because it rightly identifies who Jesus is.

Thesis (short, conversational)

My claim in this seminar is that Jesus is not establishing a perpetual papal office in Matthew 16:18.

Instead, He grounds the church in a Spirit‑given acknowledgment that Jesus is the Messiah and Son of God, with Peter functioning as the first major witness to that truth rather than as an infallible, transferable office.

In Matthew 16:18 “this rock” refers to Peter’s Spirit-revealed confession of Christ as the Messiah and Son of God, which grounds the church’s foundation in the gospel truth and not Petrine primacy.

II. Why this text matters and what’s at stake (3–4 minutes)

Ecclesiology at stake

This verse has been used as a cornerstone for arguments about Petrine primacy and the papacy, and therefore about who speaks with final authority for the church.

Lay out the main interpretive options

Option 1: Jesus is referring solely to Peter himself as the rock.

Option 2: Jesus is referring solely to Peter’s confession of who He is as the rock.

Option 3: Jesus is ultimately referring to Himself as the true foundation, with Peter and his confession pointing toward Him.

Locate your own view

“My paper’s thesis is the third. The immediate focus is the confession Peter has just made, but the content of that confession is Christ Himself, who elsewhere in the New Testament is portrayed as the cornerstone.”

III. Movement 1: reading the scene in context (4–5 minutes)

The turning point at Caesarea Philippi

“Matthew situates this conversation at Caesarea Philippi, at a hinge point in Jesus’ ministry.”

Caesarea Philippi

“Jesus first asks what others are saying about Him, then turns to the disciples with the more pointed question: ‘But who do you say that I am?’”

“That shift—from public opinion to personal confession—is the hinge of the entire episode, and Peter’s answer marks the turning point.”

The confession, not Peter’s personality, drives the paragraph

“The focal point is not Peter’s temperament or status; it is his recognition of Jesus’ identity.”

“Jesus immediately responds by saying that this recognition did not come from ‘flesh and blood’ but from the Father, which puts the stress squarely on divine revelation, not on natural insight or mere human rank.”

Line to use:

“The passage is built around a revealed answer to a Christological question, and verse 18 comes directly on the heels of that answer.”

Link to Matthew’s broader storyline

“In the larger flow of Matthew, this scene stands at the point where Jesus’ identity is clarified and His path toward suffering and the cross is first spelled out.”

“The promise about the church is therefore tethered to the revelation of who Jesus is. It does not float free from that revelation.”

IV. Movement 2: explaining verse 18 carefully (5–6 minutes)

Affirm Peter’s real importance

“First, any responsible reading has to concede that Peter is indispensable in this verse.”

“Jesus addresses him by name, pronounces a blessing on him, and speaks of ‘you’ in the singular. So any interpretation that tries to erase Peter from the text is simply not doing justice to the passage.”

Argue that the emphasis falls on what Peter has confessed

“At the same time, the strongest support for my view is the immediate sequence: Peter confesses, Jesus affirms that the confession came from the Father, and only then does Jesus speak about the rock on which He will build His church.”

“Since Jesus has just highlighted the God‑given truth Peter uttered, it makes the best sense to see the church’s foundation tied to that revealed truth rather than to Peter isolated from it.”

Use the Petros / petra distinction modestly

“My written work does draw attention to the distinction between Petros and petra in verse 18, but I want to be careful here.”

“I am not claiming that the lexical difference by itself resolves the debate; rather, it supports the contextual reading already in view.”

“In New Testament usage, petra typically refers to solid bedrock or a large rock mass—something stable and immovable—while petros is used for a stone or rock fragment more closely associated with a person like Peter.”

BDAG describes petra as bedrock—a massive, stable rock formation—and notes that in Matthew 16:18 it functions as a wordplay with Petros to picture an impregnable foundation.

So lexically, πέτρα is not a loose stone but bedrock, and in Matthew 16:18 it is used in that strong, foundational sense in deliberate contrast/parallel with Peter’s name, fitting perfectly with reading the “rock” as the bedrock‑like foundation of the Spirit‑revealed confession rather than Peter as a mere movable stone.

“The wordplay suggests that Peter is intimately tied to the foundation without being equated with the entire bedrock; the bedrock is the revealed truth about Christ that he has just spoken.”

Highlight Christ as the builder and owner

“Another crucial observation is that Jesus says, ‘I will build my church.’”

“That line places the weight of the church’s stability and growth on Christ’s ongoing action and lordship, not on Peter’s supposed independent status.”

Memorable sentence:

“The grammar of the passage gives Peter honor, but it gives Christ Supremacy.”

V. Movement 3: connecting verse 18 to the rest of the New Testament (3–4 minutes)

Christ is the primary foundation and cornerstone

“Across the New Testament, the dominant stone and foundation imagery is reserved for Christ.”

“He is the cornerstone in whom the whole structure grows; He is the rock on which people either stumble or find refuge.”

“That larger pattern makes it difficult to treat Peter as the church’s ultimate foundation in a way that rivals or displaces Christ.”

1 Corinthians 10:4 – Christ identified as the “spiritual Rock.”

Romans 9:33 – Paul applies Isaiah’s “stone” imagery directly to Christ.

Isaiah 28:16 – “tested stone, a precious cornerstone, a sure foundation,” applied to Christ in the New Testament.

Psalm 118:22 – “the stone which the builders rejected,” applied to Jesus in the Gospels and 1 Peter.

1 Peter 2:6–8 – Peter calls Jesus the “stone,” “chief cornerstone,” using Isaiah 28 and Psalm 118.

Ephesians 2:20 – Christ is “the chief cornerstone” with apostles/prophets as foundation.

1 Corinthians 3:11 – Christ is “the only foundation.”

Matthew 21:42 (Jesus applies Psalm 118:22 to Himself).

Mark 12:10–11 (same use of Psalm 118:22).

Luke 20:17 (same use of Psalm 118:22).

Acts 4:11 (Peter applies Psalm 118:22 to Christ).

The apostles as secondary, derivative foundation

“At the same time, texts like Ephesians 2:20 speak of the church as being built on the foundation of the apostles and prophets, with Christ Himself as the cornerstone.”

“That lets us say that Peter and the other apostles really are foundational—but in the sense of being commissioned witnesses who bear and transmit revelation, not in the sense of being permanent, dynastic rulers whose authority is endlessly transferable.”

Suggested line:

“The New Testament leaves room for a foundational apostolic role, but not for a foundation apart from Christ as Chief Cornerstone.”

VI. Movement 4: historical perspective (3 minutes)

Early Christian interpretation is diverse, not monolithic

“Historically, one of the most significant observations is that early Christian interpreters do not all read this text the same way, nor do they all read it as a straightforward proof of papal supremacy.”

“Some see the rock as Peter, some as his faith or confession, some as Christ, and some as believers who share Peter’s faith.”

Why that matters for your thesis

“My point is not that every Father agrees with my reading; they do not.”

“My point is that the patristic evidence is diverse enough to make it very hard to claim that Matthew 16:18 was always and everywhere taken as teaching a continuing papal office.”

Helpful line:

“My historical claim is limited but important: later Roman dogma cannot simply be read back into the earliest reception of this text as though there were no serious alternatives on the table.”

VII. Movement 5: Possible objections (4–5 minutes)

“Let me briefly tackle several objections that I thought of while researching.”

Objection 1: “Isn’t the plain reading that Peter is the rock?”

“I agree this is the strongest competing reading, and I do not want to dismiss it lightly.”

“However, the immediate literary flow—confession → divine affirmation → promise about the rock—suggests that Peter is significant precisely as the bearer of that God‑given confession.”

“So the ‘plain’ reading has to account not just for Peter’s prominence, but for the way the text frames his prominence in terms of what he has just confessed about Jesus.”

Objection 2: “What about the Aramaic background?”

“The Aramaic argument—where Jesus might have said ‘You are Kepha, and on this kepha I will build my church’—does tighten the connection between Peter and the rock, and I think we should acknowledge that.”

“Even so, a tighter pun only shows that Peter is closely bound to the saying; it does not by itself demonstrate that Jesus is instituting a perpetual Roman office. It is still compatible with a reading where Peter’s role is foundational in the first generation but not endlessly transferable.”

Objection 3: “Are you minimizing Peter?”

“I do not believe so.”

“This reading grants Peter a unique and honored role as the leading confessor and a key apostolic witness at the beginning of the church’s story.”

“What it questions is the step from that historical prominence to later claims of perpetual supremacy and infallibility.”

Objection 4: “Then how do you handle the keys?”

“The keys clearly symbolize real authority. I do not want to flatten that out or spiritualize it away.”

“But when we read Matthew 18, we see binding and loosing language extended beyond Peter, which suggests that this authority is shared and ministerial rather than restricted to a single monarchical figure.”

“On my reading, the keys are closely tied to the stewardship and proclamation of the gospel, not to an exclusive, infallible power vested in one continuing office.”

Objection 5: “Are you separating Peter from his confession too sharply?”

“Actually, my position depends on keeping them together.”

“Peter matters in the verse because he is the one through whom the Spirit‑given confession is voiced.”

“The foundation language rests on the truth confessed, but it is precisely Peter’s role as confessor that ties him into that foundation.”

Objection 6: “Why not simply say Christ is the rock and leave Peter out of it?”

“Because the wording of Matthew 16 does not allow us to ignore Peter’s role.”

“The better response is not to erase Peter, but to show how his role only makes full sense when it points beyond himself to Christ.”

“In that sense, Christ is the ultimate rock, and Peter’s God‑given confession of Him is the way that rock comes into view in this passage.”

Objection 7: “How much hangs on the chiastic structure?”

“Very little in my core argument.”

“The broader literary proposal that links Matthew 16 and 18 chiastically is interesting and may support a Christocentric and community‑focused reading of the church.”

“But even if one is unconvinced by that larger structure, the case I have laid out from the local context, the wording of verse 18, and the wider New Testament theology of foundation imagery still stands.”

VIII. Conclusion: pulling the threads together (2 minutes)

Restate the main claim briefly

“Matthew 16:18 is indeed a church‑foundation text, but the foundation is best understood in Christological and confessional terms, not in institutional and dynastic ones.”

“Peter stands at the front of the scene as the first major spokesman, but the enduring stability of the church rests on Christ’s identity and Christ’s promise, not on an unbroken chain of Petrine office‑holders.”

Highlight the theological payoff

“This reading holds two truths together: Peter is honored, and Christ remains central.”

“It allows us to recognize Peter’s genuine significance in redemptive history without turning him into the ultimate ground of the church’s life and authority.”

In Matthew 16:18 “this rock” refers to Peter’s Spirit-revealed confession of Christ as the Messiah and Son of God, which grounds the church’s foundation in the gospel truth and not Petrine primacy.

One line to keep ready for Q&A

“If I had to summarize my position in a sentence, it would be this: Peter is not removed from the passage; he is contextualized by the Christ he confesses..”