John 18:25

"And Simon Peter stood and warmed himself. They said therefore unto him, Art not thou also one of his disciples? He denied it, and said, I am not."

Cross References (ranked by relevance)

Then Sarah denied, saying, I laughed not; for she was afraid. And he said, Nay; but thou didst laugh.

The fear of man bringeth a snare: but whoso putteth his trust in the LORD shall be safe.

But a certain maid beheld him as he sat by the fire, and earnestly looked upon him, and said, This man was also with him.

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