Contentment is derived only from the Lord. In this verse, He promises to be our sustenance, and it has nothing whatsoever to do with our earthly lot in life. Philippians 4:7 describes the manner in which the peace of God becomes a great and rich provision. This peace is defined as “that tranquil state of a soul assured of its salvation through Christ, and so fearing nothing from God, content with its earthly lot.”
This peace “transcends all human understanding,” and will be the “garrison and guardian of the believer’s heart and mind” (Philippians 4:7). Peace is an untroubled, undisturbed state of well-being (3). It becomes the keeper and guardian of the believer’s heart, which is the “buffer” between the sensitivity of the human soul and its capacity to be influenced and controlled by externals. This peace brings inward control of the soul’s well-being, because faith is fixed upon the stable, unchangeable favor of God provided for the believer through his union with Jesus Christ.
Contentment is the product or effect of the mind that thinks in accord with the mind of Jesus Christ. The mind identifies with his death, His resurrection, and also His sufferings. Self-sufficiency and divine contentment are premised upon the veracity of that which is outside humanity. It is founded and built upon the promises of God.