Matthew 26:70 KJV

But he denied before them all, saying, I know not what thou sayest.
Matthew 26:70, King James Version

In context

69 Now Peter sat without in the palace: and a damsel came unto him, saying, Thou also wast with Jesus of Galilee.

70 But he denied before them all, saying, I know not what thou sayest.

71 And when he was gone out into the porch, another maid saw him, and said unto them that were there, This fellow was also with Jesus of Nazareth.