Colossians 3:15
And let the peace of Christ rule in your hearts, to which indeed you were called in one body. And be thankful — 'Peace of Christ' (eirēnē tou Christou, Christ-peace) is arbiter (brabeuo, serve as umpire). 'Rule in your hearts' is internal governance. 'Called in one body' (kaleo en hen sōma) emphasizes corporate unity as calling's content. 'Be thankful' (eucharistos) returns to gratitude as fundamental posture. Peace and thanksgiving are spiritual marks.