Spiritual warfare is the daily experience of any Christian worth their salt. It was the same for the church in Ephesus. Having been saved from the pagan worship of Diana, they must have been facing steep battle from the enemy, Satan. Paul wrote this letter to the Ephesian Church to challenge them to stand their ground against the devil's schemes by virtue of their privileged position in Christ. The central message of the epistle is that when believers understand their position in Christ, they are able to live in unity, in purity, in harmony and to have victory in spiritual warfare.