Cross reference
Matthew 26:34
34 Jesus said to him, `Verily I say to thee, that, this night, before cock-crowing, thrice thou wilt deny me.'
John 13:38
38 Jesus answered him, `Thy life for me thou wilt lay down! verily, verily, I say to thee, a cock will not crow till thou mayest deny me thrice.'
Luke 22:34
34 and he said, `I say to thee, Peter, a cock shall not crow to-day, before thrice thou mayest disown knowing me.'
Matthew 26:75
75 and Peter remembered the saying of Jesus, he having said to him -- `Before cock-crowing, thrice thou wilt deny me;' and having gone without, he did weep bitterly.
Mark 14:30-31
30 And Jesus said to him, `Verily I say to thee, that to-day, this night, before a cock shall crow twice, thrice thou shalt deny me.'
31 And he spake the more vehemently, `If it may be necessary for me to die with thee -- I will in nowise deny thee;' and in like manner also said they all.