It is a letter from Paul like no other. He is not writing about a specific issue. He is not trying to correct something or even teach something. It is a letter of praise meant to be circulated to all the churches beginning at Ephesus.
Listen to what various commentators say about it:
"Apart from the Epistle to the Romans, few who have studied Paul’s Epistle to the Ephesians would challenge the statement that it is the “Rolls Royce of the epistles.” F. F. Bruce, noted New Testament scholar, calls Ephesians “the quintessence of Paulinism.”1 C. H. Dodd called Ephesians “the crown of Paulinism.” According to William Hendriksen, Ephesians has been called “the divinest composition of man,” “the distilled essence of the Christian religion,” “the most authoritative and most consummate compendium of the Christian faith,” “full to the brim with thoughts and doctrines sublime and momentous.”
Pretty high praise.
You should know Paul spent over 3 years at Ephesus, longer than he spent anywhere else that we know of. You should also know he wrote this letter from prison. Were I to give it a title I would call it: "Praises From Prison".
Says another commentator: " No epistle penned by the Apostle Paul is so extensive in the change of perspective which it challenges us to adopt."
Without further ado - Ephesians
1:1 "Paul, an apostle of Jesus Christ by the will of God, to the saints who are in Ephesus, and faithful in Christ Jesus: 2 Grace to you and peace from God our Father and the Lord Jesus Christ.
3 Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, 4 just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, 5 having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will, 6 to the praise of the glory of His grace, by which He made us accepted in the Beloved."
There is a taste of Ephesians. Tomorrow we begin to dig! :)