Paul, an apostle of Jesus Christ by the will of God, and Timothy our brother, unto the church of God which is at Corinth, with all the saints who are in all Achaia:
All Commentaries on 2 Corinthians 1:1 Go To 2 Corinthians 1
John Chrysostom
AD 407
Once more, Paul calls the Corinthians a church, in order to bind them together, and “saints,” implying that if anyone is impure he is not included in this greeting.