The Ephesian believers lived during a pivotal period in the history of the church. It was that time, soon after Christ’s ascension into heaven, when God chose to reveal to His church what had been hid in Him since the beginning of time (Eph. 3:9). That which God was now revealing to the early New Testament church had “in other ages” remained a mystery to the sons of men (v. 5). Now the saints in Ephesus are privileged to receive the labors of a man to whom this mystery had been revealed: the great apostle Paul. Paul writes in Ephesians...