“And let the peace of God rule in your hearts, to the which also ye are called in one body; and be ye thankful.”
King James Version (KJV)
3:15 And then the peace of God shall rule in your hearts - Shall sway every temper, affection, thought, as the reward (so the Greek word implies) of your preceding love and obedience.
Col 3:15 Let the peace of Christ rule in your hearts. The peace of those who are made brethren in Christ and filled with his love. It must reign in the heart, then it will rule in the acts. This is the peace to which Jew, Gentile, and every race is called in one body. There must be no discord, schism, or factious spirit in the fold.