This section of Scripture is the “how to live out” the exhortation given in Philippians 2:14-15, “Do all things without grumbling or disputing, that you may be blameless and innocent, children of God without blemish in the midst of a crooked and twisted generation, among whom you shine as lights in the world...”
Namely: To understand our Union WITH CHRIST, to rejoice always IN CHRIST, to pray with thanksgiving TO CHRIST and to set our minds ON CHRIST by meditating on His Word. This is how we not only have the peace of God, but also see that the God of Peace is with us!