2 Corinthians 1:2, The Church of God
William MacDonald observed well, “The letter is addressed to the church of God which is at Corinth, with all the saints who are in all Achaia. The expression “church of God” means that it was an assembly of believers belonging to God. It was not a heathen assembly, or some nonreligious gathering of people, but a company of born-again Christians, called out from the world to belong to the Lord.”