Paul wrote the letter to the Ephesians sometime in AD 60–61, from prison in Rome around the same time he wrote Colossians, Philippians and Philemon. Most of these letters were sent to the churches by sending them with Tychicus,
Ephesians is one of Paul’s most formal letters. While Galatians offers instructions particularly important for those churches overrun with legalism, Ephesians deals with topics at the very core of what it means to be a Christian—both in faith and in practice—regardless of any particular problem in the community.
Paul divided his letter to the Ephesians into two clear segments; applying the truths of the first makes possible the actions and lifestyle of the second. Paul spent the first three chapters of the letter discussing God’s creation of a holy community by His gift of grace in the death and resurrection of Jesus Christ. The members of this community have been chosen by God through the work of Christ, adopted as sons and daughters of God, and brought near to the Father through faith in His Son. All people with this faith—Jews and Gentiles alike—were dead in their transgressions and sins but have been made alive because of the person and work of Jesus Christ.
While Paul was not responding to a particular theological or moral problem, he wanted to protect against future problems by encouraging the Ephesians to mature in their faith. So after laying out profound theological truths in the first half of the book, Paul made his purpose clear: he expected that this community of faith would walk in accordance with its heavenly calling (Ephesians 4:1). As a result of the theological realities Christians accept by their faith in God, several practices should follow in their relationships within the church, in the home, and in the world.