A monk named Telemachus lived a quiet life, but his death at the end of the fourth century changed the world. Visiting Rome from the East, Telemachus intervened in the blood sport of the gladiatorial arena. He jumped over the stadium wall and tried to stop the gladiators from killing each other. But the outraged crowd stoned the monk to death. The emperor Honorius, however, was moved by Telemachus’ act and decreed the end of the 500-year practice of gladiator games.

When Paul calls Jesus “our peace,” he refers to the end of hostility between Jews and gentiles (Ephesians 2:14). God’s…