Luke 22:60

"Man," said Peter, "I do not know what you mean." Instantly, just as he was speaking, the cock crowed;

Matthew 26:74-75

At this he broke out cursing and swearing, "I do not know the man." At that moment a cock crowed.

Mark 14:71-72

But he broke out cursing and swearing, "I do not know the man you mean."

Luke 22:34

Jesus said, "I tell you, Peter, the cock will not crow to-day before you have three times denied that you know me."

John 18:27

Again Peter denied it. And at that very moment the cock crowed.

Treasury of Scripture Knowledge

Summary

And Peter said, Man, I know not what thou sayest. And immediately, while he yet spake, the cock crew.

Bible References

The cock

Luke 22:34
Jesus said, "I tell you, Peter, the cock will not crow to-day before you have three times denied that you know me."
Matthew 26:74
At this he broke out cursing and swearing, "I do not know the man." At that moment a cock crowed.
Mark 14:71
But he broke out cursing and swearing, "I do not know the man you mean."
John 18:27
Again Peter denied it. And at that very moment the cock crowed.