2 Corinthians 11:31

God and Father. Not two beings, but one, God the Father. Paul solemnly places himself, as it were, under oath.

Blessed for evermore. See on Rom. 9:5.

I lie not. This most solemn oath is something unique in Paul’s writings. At other times he makes strong affirmations (Rom. 1:9; Gal. 1:20; 1 Thess. 2:5), but none of these can be compared with this one in strength, solemnity, expression, and appeal. Whether Paul refers to what precedes — to his firm purpose to restrict his boasting to his “infirmities” — or to what follows, whether to the incident at Damascus or to the first part of ch. 12, concerning divine revelations, is not clear. Perhaps he refers to both what precedes and what follows. Apparently he realized that some, at least, would doubt the sincerity of his statements.