Philippians is a letter from Paul expressing deep gratitude and joy for the believers in Philippi. It emphasises the themes of unity, humility, and steadfastness in Christ. Paul encourages the church to rejoice in all circumstances, to live worthy of the gospel through Christlike humility, and to press on toward spiritual maturity. The letter calls believers to focus on eternal rewards, practice contentment, and shine as lights in a world that desperately needs the hope of the gospel.