Philippians 4:7 (BSB)

And the peace of God, which surpasses all understanding, will guard your hearts and your minds in Christ Jesus.

From Philippians 4. Also in the ESV.

Commentary on Philippians 4:7

• John Calvin (Reformed), Calvin's Commentaries on Philippians 4:7: 7. And the peace of God Some, by turning the future tense into the optative mood, convert this statement into a prayer, but it is without proper foundation. For it is a promise in which he points out the advantage of a firm confidence in God, and invocation of him.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Philippians 4:1-9: The apostle begins the chapter with exhortations to divers Christian duties. I. To stedfastness in our Christian profession, Phi 4:1. It is inferred from the close of the foregoing chapter: Therefore stand fast, etc. Seeing our conversation is in heaven, and we look for the Saviour to come thence and fetch us thither, therefore let us stand fast.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Philippians 4:7: And the peace of God which passeth all understanding,.... Not that peace which God calls his people to among themselves in their effectual calling; and which he requires of them to cultivate and maintain; and which he encourages in them by the promise of his gracious presence among them; and which indeed he is the author of, and therefore is so called, Col 3:15; and...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on Philippians 4:7: Verse 7. And the peace of God. The peace which God gives. The peace here particularly referred to is that which is felt when we have no anxious care about the supply of our wants, and when we go confidently and commit everything into the hands of God. "Thou wilt keep him in perfect peace whose mind is stayed on thee," . . Which passeth all understanding.