The Day of the Lord was not a random point on their eschatological chart in the first century. It was the trigger for the redemption. It indicated the holy day when the King of the Jews would be enthroned. Some of Paul’s opponents in Corinth likewise taught Corinthian disciples that they were ‘kings already’ [1 Corinthians 4:8]. Like in the reference above, the suggestion that they had begun to reign already was about the Messianic role. To suggest that it had begun not only suggests some ghastly things about the quality of the Master’s reign, it further suggests that hope of the prophets and the apostles has been realized and strips the disciple of vital components of perseverance. - Bill Scofield, The Good Confession