Sermons / The Gospel Of John / The Denials Of Peter
John 18 · Expository Sermon

The Denials Of Peter

Series: The Gospel Of John Episode 23

The disciple who swore he would never fall warms himself at the enemy's fire.

The Gospel Of John
About This Sermon

How could the disciple who swore to die for Christ deny even knowing Him? In John 18:15-27, Dr. Toby B. Holt preaches the painful account of Peter’s three denials in the high priest’s courtyard, set against the faithful confession of Jesus before His accusers. The Reformed tradition reads this not as the loss of salvation but as the grievous fall of a true believer whom Christ preserves. Warned that the rooster would crow, Peter still insisted, “I am not” (John 18:17, NKJV). Yet Christ had already prayed, “that your faith should not fail” (Luke 22:32, NKJV), securing the restoration to come.

Sermon Chapters

0:00 — From Boast to Distance. Peter, who vowed to die, follows from afar (John 18:15-16).

0:36 — One of the Twelve Falls. The peril of self-confidence (John 18:17).

15:30 — Three Denials. “I am not” — Peter disowns his Lord (John 18:17, 25-27).

23:43 — The Rooster Crows. Christ’s word proves true and Peter’s heart breaks (John 18:27).

25:00 — Grace for the Faithless. Peter’s fall is not beyond Christ’s restoring mercy.

Questions This Sermon Answers

Peter genuinely loved Christ and had just drawn his sword in the garden. Scripture does not flatter its heroes: it records that Peter “followed Jesus” (John 18:15, NKJV) yet “stood at the door outside” (John 18:16, NKJV). The same boldness that swung a sword failed in a servant girl’s gaze. His love was real, but his self-confidence had outrun his strength, and the warmth of the enemy’s fire proved more inviting than the cost of confession.

Jesus had said plainly, “the rooster shall not crow till you have denied Me three times” (John 13:38, NKJV). Peter did not believe such failure was possible in himself. The first lesson of this passage is that knowing our weakness in advance does not, by itself, prevent the fall. As 1 Corinthians 10:12 (NKJV) warns, “let him who thinks he stands take heed lest he fall.” Self-trust blinds us precisely where we feel most secure.

John deliberately interweaves the two scenes. While Peter stands by the fire saying “I am not” (John 18:25, NKJV), Jesus stands before the high priest saying, “I spoke openly to the world” (John 18:20, NKJV). The disciple denies; the Master confesses. The contrast magnifies grace: our salvation does not rest on our faltering testimony but on Christ’s faithful witness. Where Peter failed as a confessor, Christ stood firm as the true and faithful Witness.

No. The Westminster Confession (17.1) teaches that those whom God has accepted “can neither totally nor finally fall away from the state of grace.” Peter fell grievously, but not finally. The Confession (17.3) acknowledges that believers may “fall into grievous sins” and “incur God’s displeasure,” yet they are renewed to repentance. Peter’s tears, and Christ’s later restoration in John 21, prove that a true believer may stumble badly without being cast away forever.

Because Christ had already secured it. Before the denial, Jesus told him, “I have prayed for you, that your faith should not fail; and when you have returned to Me, strengthen your brethren” (Luke 22:32, NKJV). Note the certainty: “when you have returned,” not “if.” Peter’s perseverance rested not on Peter’s resolve but on the intercession of his Lord. The same High-Priestly prayer that held Peter holds every believer the Father has given to the Son.

Scripture honors truth above reputation. The denial is recorded in all four Gospels, and Peter, the likely source behind Mark, did not hide his own shame. This candor is itself evidence of the Bible’s reliability and of God’s purpose to comfort fallen saints. Proverbs 28:26 (NKJV) says, “He who trusts in his own heart is a fool.” Peter’s recorded failure stands as a permanent warning against self-confidence and a permanent encouragement that grace reaches the penitent.

The rooster’s crow was the appointed sign. “Peter then denied again; and immediately a rooster crowed” (John 18:27, NKJV). That ordinary sound carried the weight of Christ’s exact word, fulfilled to the letter. It exposed Peter’s sin and, according to Luke 22:61, met the Lord’s turning gaze, breaking Peter’s heart to repentance. The crow proclaimed both the truthfulness of Christ’s every word and the providence that governs even the timing of a bird.

The fire of coals is no incidental detail. Peter sought comfort and anonymity among Christ’s enemies, warming himself where he should have stood apart. John 18:18 (NKJV) notes, “Peter stood with them and warmed himself.” Compromise often begins with seeking ease in the wrong company. Later, beside another “fire of coals” (John 21:9), the risen Christ would restore him. The same Lord who saw Peter’s drift would seek him out and reclaim him.

Pride. Peter had boasted, “I will lay down my life for Your sake” (John 13:37, NKJV), trusting his own devotion. “Pride goes before destruction, and a haughty spirit before a fall” (Proverbs 16:18, NKJV). The doctrine of total depravity teaches that even regenerate believers retain corruption and cannot stand in their own strength. Peter’s fall is a sober mirror: the believer most certain he could never deny Christ is often the one least guarding his heart.

By looking to Christ, not to ourselves. Peter’s recovery did not begin with resolve but with the Savior’s intercession and restoring grace. Believers persevere because they are kept, “kept by the power of God through faith” (1 Peter 1:5, NKJV). We watch and pray, distrust our own hearts, and rest in Christ’s finished work. When we fall, we return—as Peter did—to the One who prayed for us and still bids us, “Feed My sheep.”

Key Theological Points

1. Following at a Distance

The denial begins not with hatred but with distance. Peter “followed Jesus” but only at a distance, lingering at the door until another disciple brought him in (John 18:15-16). He warmed himself at the enemy’s fire rather than standing with his Lord. Spiritual collapse rarely starts with open rebellion; it starts with quiet drift—following Christ from afar while seeking comfort among those who oppose Him. “And Peter stood with them and warmed himself” (John 18:18, NKJV).

2. Three Times Denied

Three times Peter is asked, and three times he disowns the Lord he swore to die for. To a servant girl, then to the gathered servants, he answers, “I am not” (John 18:17, 25, NKJV). The man who promised, “I will lay down my life for Your sake” (John 13:37), cannot confess Christ before a doorkeeper. His fall warns every believer: “let him who thinks he stands take heed lest he fall” (1 Corinthians 10:12, NKJV).

3. Grace Beyond the Fall

Even here, grace reigns. Christ had prayed beforehand, “that your faith should not fail” (Luke 22:32, NKJV), so Peter’s fall, though grievous, was not final. The Westminster Confession (17.3) teaches that true believers may fall into grievous sin yet be renewed to repentance, for God preserves His own. The rooster’s crow that condemned Peter also called him back. The Christ he denied would seek him at another fire and restore him to service.

The Scripture Text: John 18:25-27 (NKJV)

“Now Simon Peter stood and warmed himself. Therefore they said to him, ‘You are not also one of His disciples, are you?’ He denied it and said, ‘I am not!’ One of the servants of the high priest, a relative of him whose ear Peter cut off, said, ‘Did I not see you in the garden with Him?’ Peter then denied again; and immediately a rooster crowed.”

Continue studying: explore the full Gospel of John sermon series, or browse the complete Reformed Sermon Archive.

About Our Speaker
Dr. Toby B. Holt

About The Speaker: Dr. Toby Holt serves as the third President of New Geneva Theological Seminary (Colorado Springs, CO), founded 1993. An expository preacher with over 1.9 million sermon downloads on SermonAudio.com, Dr. Holt brings over 17 years of pastoral experience to his verse-by-verse Bible teaching. New Geneva offers fully online Reformed theological education — M.Div., Th.M., D.Min., and other degrees.

More in The Gospel Of John

Continue the verse-by-verse series.

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