And let the peace of God rule in your hearts, to which also you were called in one body; and be thankful. (Colossians 3:15, NKJV)
The gospel calls us to peace with God and with others. Sin introduced conflict between man and God, producing spiritual death and consequentially, physical death (Gen. 2:17; 3:19; Rom. 5:12; 6:23). The angelic announcement at Christ’s birth (“Glory to God in the highest, and on earth peace, goodwill toward men!”) praised God for His goodwill toward humanity that brought peace between Himself and sinners through His Son (Lk. 2:14; Tit. 3:4-5). Jesus Christ “is our peace” (first with God, then with other sinners) – “For He Himself is our peace, who has made both one…” (Eph. 2:14). Being reconciled to God “in one body through the cross, thereby putting to death the enmity,” hostility with God is removed and replaced with harmonious tranquility “in one body” (the church). That is the peace the angels announced. That is the peace Christ’s death accomplished. That peace must now rule (govern) our hearts. Being at peace with God, we can successfully strive to “live peaceably with all men” (Rom. 12:18). Until then, sin rules the heart, infusing our marriages, families, nations, and the church with its selfishness, confusion, and every evil thing (Jas. 3:14-16). By contrast, “the wisdom that is from above is first pure, then peaceable, gentle, willing to yield, full of mercy and good fruits, without partiality and without hypocrisy” (Jas. 3:17). Thank God for His peace! Without Him, peace is unattainable.