Then he began to curse and swear, saying, "I do not know the Man!" Immediately a rooster crowed.
Matthew 26:74
Surrounding context
26:73 And a little later those who stood by came up and said to Peter, "Surely you also are one of them, for your speech betrays you."
26:74 Then he began to curse and swear, saying, "I do not know the Man!" Immediately a rooster crowed.
26:75 And Peter remembered the word of Jesus who had said to him, "Before the rooster crows, you will deny Me three times." So he went out and wept bitterly.