This altogether spiritual peace resides in hearts and thus points to the Holy Spirit, who infuses it in the form of mutual love, harmony, and brotherly unity: “To set the mind on the Spirit is life and peace” (Rom 8:6); “the reign of God is righteousness and peace and joy in the Holy Spirit.”42 So we understand not only that “the peace of God passes all understanding” (Phil 4:7), but that the apostles ceaselessly exhort believers to seek and find peace between themselves, because peace is a distinguishing