Philip Schaff's Popular Commentary (4 vols)
2 Corinthians 11 - Introduction
VINDICATION OF HIS APOSTOLIC AUTHORITY AGAINST TRADUCERS.
The tone of these concluding Chapter s is so very different from that of all that precedes them, that though it is impossible to doubt that both came from the same pen (only two or three of the wildest critics have ever alleged the contrary), yet probably some interval took place between the time when the preceding portion was written and that of these three Chapter s. Perhaps also disquieting news may have come from Corinth of the growing influence of the hostile party, rendering it necessary, as he was so soon to return to it (2 Corinthians 12:14, and 2 Corinthians 13:1), that he should assume the peremptory tone which we find here; for with the loss of his apostolic influence at Corinth, the very truth of that Gospel which he had brought them, and which had made that Church all that it was, would have been fatally affected there.