A.T. Robertson Commentary Colossians 3:15

"And let the peace of Christ rule in your hearts, to the which also ye were called in one body; and be ye thankful." — Colossians 3:15 (ASV)

The peace of Christ (η ειρηνη του Χριστου). The peace that Christ gives (John 14:27).

Rule (βραβευετω). Imperative active third singular of βραβευω, to act as umpire (βραβευς), old verb, here alone in N.T. See 1 Corinthians 7:15 for called in peace.

In one body (εν εν σωματ). With one Head (Christ) as in 1:18,24.

Be ye thankful (ευχαριστο γινεσθε). "Keep on becoming thankful." Continuous obligation.