Charles Ellicott Commentary Philippians 4:7

"And the peace of God, which passeth all understanding, shall guard your hearts and your thoughts in Christ Jesus." — Philippians 4:7 (ASV)

The peace of God—that is (like the righteousness of God, the life of God), the peace which God gives to every soul which rests on Him in prayer. It is peace—the sense of unity in the largest sense—the peace on earth proclaimed at our Lord’s birth, left as His last legacy to His disciples, and pronounced at His first coming back to them from the grave (Luke 2:14; John 14:27).

Hence it includes peace with God, peace with men, peace with self. It keeps—that is, watches over with the watchfulness that neither slumbers nor sleeps—both the hearts and minds (or, more properly, the souls and the thoughts formed in them), guarding our whole spiritual action, both in its source and its developments. It is through Christ Jesus, for He is our peace (Ephesians 2:14), as making all one, and reconciling all to God.

The comprehensiveness and beauty of the passage have naturally made it (with the characteristic change from the “shall” of promise to the “may” of benediction) the closing blessing of our most solemn church service of “Holy Communion” with God and man.