Matthew 26:69-73

Now Peter was sitting outside in the courtyard, and a slave woman came to him and said, “You too were with Jesus the Galilean.”

But he denied it before them all, saying, “I do not know what you are talking about.”

When he had gone out to the gateway, another slave woman saw him and *said to those who were there, “This man was with Jesus of Nazareth.”

And again he denied it, with an oath: “I do not know the man.”

A little later the bystanders came up and said to Peter, “You really are one of them as well, since even the way you talk gives you away.”