Matthew 26:74
Then began he to curse and to swear, saying, I know not the man. And immediately the cock crew.
Cross-reference
In Matthew 10:32, Jesus promises to confess those who confess Him—Peter fails to confess, showing the opposite.
In Matthew 10:33, Jesus warns denying Him leads to being denied before the Father—Peter's denial fulfills that warning.
Mark 14:30 records Jesus' prediction that Peter would deny Him three times before the rooster crows—exactly what happens here.
Mark 14:71 is the direct parallel: Peter calls down curses and swears he does not know Jesus, identical to this verse.
Mark 14:72 adds that Peter remembered Jesus' prophecy and wept, deepening the emotional weight of his denial.
John 18:27 confirms the rooster crow immediately after Peter's denial, but omits the weeping.
In John 21:15-17, Jesus restores Peter by asking three times 'Do you love me?'—reversing his threefold denial.
In Romans 9:3, Paul wishes himself accursed for others' salvation—contrasting with Peter's self-protective curse denying Christ.
Mark 14:70 adds that Peter's Galilean accent gave him away, explaining why he was recognized as a disciple.
Luke 22:34 records Jesus' prediction that Peter would deny him three times before the rooster crows—here that prophecy is fulfilled.
Luke 22:59 describes a third accuser who insists Peter was with Jesus because he is a Galilean—expanding the denial scene.
John 21:17 records Peter's threefold affirmation of love for Jesus, directly mirroring and restoring his three denials here.