Luke 22:59

And at about an hour's distance, another person strongly asserted, saying, Of a certainty this fellow was also with him: for he too is a Galilean.

Matthew 26:73-74

But after a little while they who stood by, came up and said to Peter, Assuredly thou also art one of them: for even thy speech maketh thee manifest.

Mark 14:69-70

And a maid-servant observing him again; began to say to those who stood by, This man is one of them.

John 18:26-27

One of the servants of the high-priest, being a kinsman of him whose ear Peter cut off, said, Did I not see thee in the garden with him?

Treasury of Scripture Knowledge

Summary

And about the space of one hour after another confidently affirmed, saying, Of a truth this fellow also was with him: for he is a Galilaean.

Bible References

Confidently

Matthew 26:73
But after a little while they who stood by, came up and said to Peter, Assuredly thou also art one of them: for even thy speech maketh thee manifest.
Mark 14:69
And a maid-servant observing him again; began to say to those who stood by, This man is one of them.
John 18:26
One of the servants of the high-priest, being a kinsman of him whose ear Peter cut off, said, Did I not see thee in the garden with him?