The letter to the Ephesians is about the amazing glory and grace of God, what He has done and how we should live. Paul was sent by the will of God to preach the word. The recipients were the church at Ephesus, called to be set apart for God and devoted to Him. As a church, we are called to be in the world, but not of the world. Faithful saints understand who God wants us to be. The theme of the book of Ephesians is grace and peace - reconciliation with God brings health and harmony for individuals and churches alike