Matthew 26:75
And Peter remembered the saying of Jesus: before the rooster crows, you will deny me three times. And he went out and wept bitterly. The remembering and the bitter weeping: Peter's recognition of the fulfillment of Jesus' prediction is the turning point that distinguishes Peter from Judas. Both betray; both recognize their failure. Judas goes and hangs himself; Peter goes out and weeps bitterly — and will be restored by the risen Jesus (John 21:15–19). The bitter weeping is the beginning of the repentance.