Timothy F. Kauffman (Protestant): 2 Corinthians was Probably the Third Corinthian Correspondence (cf. 1 Corinthians 5:9-11)
In what has come to be known as 2 Corinthians (which probably is his third letter) . . . (Timothy F. Kauffman and Robert M. Zins, A Gospel Contrary! A Study of Roman Catholic Abuse of History and Scripture to Propagate Error [2023], xi)