Augustine traces peace, or well-ordered concord, back to love of God and love of neighbor. The command to love the Lord our God and to love our neighbor as ourselves implies that we must try to get our neighbor to love God, since we are commanded to love our neighbor as ourselves. This takes place first and foremost in the home as love directs both those who rule and those who obey.
But in the family of the just man who lives by faith and is as yet a pilgrim journeying on to the celestial city, even those who rule serve those whom they seem to command; for they rule not from a love of power, but from a sense of the duty they owe to others--not because they are proud of authority, but because they love mercy. (The City of God, 19.14)
In Christ, ruling becomes a service of love, laying down our lives for those under our care so that they might know God.