Mark 14:70

But he again denied it. And after a little while again those who stood by said to Peter, Surely thou are from them, for thou are a Galilean, and thy accent is similar.

Acts 2:7

And they were amazed and marveled, saying to each other, Behold, are not all these men who speak Galileans?

then they said to him, Say now Shibboleth, and he said Sibboleth, for he could not frame to pronounce it right, then they laid hold on him, and killed him at the fords of the Jordan. And there fell at that time of Ephraim forty-two

Matthew 26:73-74

And after a little while those who stood, having approached, said to Peter, Surely thou also are of them, for thy accent even makes thee apparent.

Mark 14:68

But he denied, saying, I know not, nor understand what thou say. And he went outside onto the porch, and a cock sounded.

Luke 22:59-60

And about one hour having passed, some other man insisted, saying, In truth this man was also with him, for he is also a Galilean.

John 18:26-27

One of the bondmen of the high 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

Mark 14:70

And he denied it again. And a little after, they that stood by said again to Peter, Surely thou art one of them: for thou art a Galilaean, and thy speech agreeth thereto.