Luke 22:59

About an hour had passed when another man insisted, "That fellow really was with him. Why, he is a Galilean!"

Matthew 26:73-74

After a little the bystanders came up and said to Peter, "To be sure, you are one of them too. Why, your accent betrays you!"

Mark 14:69-70

Again the maidservant who had noticed him began to tell the bystanders, "That fellow is one of them."

John 18:26-27

Said one of the high priest's servants, a kinsman of the man whose ear had been cut off by Peter, "Did I not see you with him in the orchard?"

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
After a little the bystanders came up and said to Peter, "To be sure, you are one of them too. Why, your accent betrays you!"
Mark 14:69
Again the maidservant who had noticed him began to tell the bystanders, "That fellow is one of them."
John 18:26
Said one of the high priest's servants, a kinsman of the man whose ear had been cut off by Peter, "Did I not see you with him in the orchard?"