The answer is: Warming himself at the fire

John 18:18,25

When Peter denied Jesus the second time, it was a chill on a chilly night outside of the high priest's palace. He was mingling with the crowd—his hands presumably warming themselves by a fire that offered little more than temporary comfort amidst grave circumstances. It's intriguing how the role of the fire in this moment serves as a stark symbol of the warmth and light that Peter craved in that cold hour but could not provide unto himself or to his master.

Traditions say Peter's denial, nestled among the smoke of the fire, represents the struggle of our human nature—bravery versus fear. This scene foreshadows how even the closest disciples faced trials and shadows, much like individuals today confronting inner doubts. Peter, often seen as a pillar of the Church, had his failings in plain view, reflecting how we all stumble, even under pressing situations.

Trivia buffs may find it fascinating that the name "Petros," which means "rock," served as a jaunty precursor to Jesus' prophecy that such a fragile individual could become the foundation of the Church. Moreover, this incident echoes echoes the ancient biblical theme of light and darkness—just as Israel wondered about its path, so does Peter navigate the murky waters of his conviction! Remember a fire’s flicker can reveal much; it shows the strength and vulnerabilities inherent in us all, symbolizing hope amid uncertainty.