John 18:18
And the servants and officers stood there, who had made a fire of coals; for it was cold: and they warmed themselves: and Peter stood with them, and warmed himself.
Cross-references
Mark 14:54
Parallel
Mark 14:54 describes the same scene—Peter warming himself with the guards—confirming the setting.
Luke 22:55
Parallel
Luke 22:55 adds that Peter sat down among them, giving the same account of the fire.
Luke 22:56
Parallel
Luke 22:56 continues the story: the servant girl sees Peter by the fire, leading to his denial.