What is the central message of Paul's letter to the Ephesians, and why is it important for the church today? The central message of Ephesians is the unity of all believers—Jew and Gentile alike—in Christ, rooted in God's eternal purpose and expressed through the life of the local church. This unity, both spiritual and practical, glorifies God and serves as a witness to the world. Paul lays a theological foundation in chapters 1–3 and builds on it with practical, relational exhortations in chapters 4–6, urging believers to live out their new life in Christ together in holiness, humility, and love.