EPHESIANS: Author: Paul. When Written: Around A.D. 60. Theme: Building the Body of Christ: Key Verse: Ephesians 2:8-10 – For by grace you have been saved through faith, and not of yourselves; it is a gift of, not of works, lest anyone should boast. For as are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them.