Matthew 26:73

And after a little the bystanders coming to Peter, said, Truly, thou art also one of them, for indeed thy speech betrays thee.

Luke 22:59-60

And about one hour having elapsed, a certain other man accosted him, saying, He was truly with Him: for he is a Galilean.

John 18:26-27

And one of the servants of the chief priest, being a kinsman of him whose ear Peter cut off, says, Did I not see thee in the garden with Him?

Treasury of Scripture Knowledge

Summary

And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee.

Bible References

Surely

Luke 22:59
And about one hour having elapsed, a certain other man accosted him, saying, He was truly with Him: for he is a Galilean.
John 18:26
And one of the servants of the chief priest, being a kinsman of him whose ear Peter cut off, says, Did I not see thee in the garden with Him?