Paul calls peace something that “rules” — an active governor, not a passive absence of conflict. That's a different picture than we usually carry. We tend to think of peace as what's left once the noise goes away; Paul describes it as something with authority, meant to actually adjudicate between competing internal voices, not just quiet them. And he ties it to something communal — “as members of one body you were called to peace” — this isn't only about private internal calm. Peace ruling in you has implications for how you function inside a group of people, not just how you feel alone.