In this sermon on Philippians 4:7, Charles Spurgeon teaches that while Christians are commanded to keep their hearts with diligence (from his morning sermon), they cannot do this on their own but must depend on God's peace—both the peace established between believers and God through Christ's atonement, and the resulting peace experienced in a quiet conscience—which surpasses human understanding because philosophers and moralists can never achieve it through their own wisdom or effort. To obtain this peace, Christians must practice three precepts: rejoice always (avoiding the sin of constant complaining and doubt), be moderate in all desires and expectations (except desires for God), and immediately bring every trouble to God in prayer rather than brooding over problems or telling them to others. Spurgeon explains that this peace keeps the heart full of love for God, pure from Satan's temptations (since the Christian already possesses everything Satan offers), undivided in devotion to God alone, rich through access to meditation and Scripture, and peaceable in all circumstances—making believers armed and protected against all spiritual attacks. He concludes by urging unconverted people to look not at their own wicked hearts but at Christ's meek and lowly heart, which welcomes sinners who come to Him.

Sermon delivered on February 21, 1858.