Matthew 26:70-74

But he denied before them all, saying, I know not what thou sayest. And when he was gone out into the porch, another maid saw him, and saith unto them that were there, This man also was with Jesus of Nazareth. And again he denied with an oath, I know not the man. And after a little while they that stood by came and said to Peter, Of a truth thou also art one of them; for thy speech maketh thee known. Then began he to curse and to swear, I know not the man. And straightway the cock crew.