Colossians 3:15

“And let the peace of God rule in your hearts, etc.] By “the peace of God” is meant, either the peace believers have with God, which is his gift, and passes all understanding, and flows from a comfortable apprehension of interest in the blood, righteousness, and atonement of Christ; or rather that peace which does, or should subsist among the saints themselves, which God is the author of, calls for, and requires, and encourages in them. The Vulgate Latin, Syriac, and, Ethiopic versions, read, “the peace of Christ”; and so the Alexandrian copy, and some others. This may be said to “reign” in their hearts, when it is the governing principle there; when it restrains the turbulent passions of…”

“peace of God--The oldest manuscripts and versions read, "The peace of CHRIST" (compare Phi 4:7). "The peace of GOD." Therefore Christ is God. Peace was His legacy to His disciples before He left them (Joh 14:27), "MY peace I give unto you." Peace is peculiarly His to give. Peace follows love (Col 3:14; Eph 4:2-3). rule--literally, "sit as umpire"; the same Greek verb simple, as appears compounded (Col 2:18). The false teacher, as a self-constituted umpire, defrauds you of your prize; but if the peace of Christ be your umpire ruling in your hearts, your reward is sure. "Let the peace of Christ act as umpire when anger, envy, and such passions arise; and restrain them." Let not those passions…”

“And let the peace of God - The peace which God gives; Notes, Philippians 4:7. Rule in your hearts - Preside in your hearts; sit as umpire there (Doddridge); govern and control you. The word rendered here “rule” - βραβεύετω brabeuetō - is commonly used in reference to the Olympic and other games. It means, to be a director, or arbiter of the public games; to preside over them and preserve order, and to distribute the prizes to the victors. The meaning here is, that the peace which God gives to the soul is to be to us what the brabeutes, or governor at the games was to those who contended there. It is to preside over and govern the mind; to preserve every thing in its place; and to save it…”

“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. Colossians 3:16”

“3:15 Just as Christ is one, so there can be only one body of Christ (see 1:18; Eph 4:4-6). Allegiance to Jesus as Lord must transcend differences and will result in peace (harmonious relationships).”

“the peace: Psa 29:11; Isa 26:3, Isa 27:5, Isa 57:15, Isa 57:19; Joh 14:27, Joh 16:33; Rom 5:1, Rom 14:17; Rom 15:13; Co2 5:19-21; Eph 2:12-18, Eph 5:1; Phi 4:7 to the: Co1 7:15; Eph 2:16, Eph 2:17, Eph 4:4, Eph 4:16 and be: Col 3:17, Col 1:12, Col 2:7; Psa 100:4, Psa 107:22, Psa 116:17; Jon 2:9; Luk 17:16-18; Rom 1:21; Co2 4:15, Co2 9:11; Eph 5:20; Phi 4:6; Th1 5:18; Ti1 2:1; Heb 13:15; Rev 7:12 Colossians 3:16”