John Gill Commentary 2 Corinthians 12:3

"And I know such a man (whether in the body, or apart from the body, I know not; God knoweth)," — 2 Corinthians 12:3 (ASV)

And I knew such a man
The same man, namely himself, is here designed, and the same rapture spoken of, and the condition he was in expressed in the same words: which repetition is made for the more strong affirmation of what he delivered, and to signify the marvellousness of this vision, and how surprising and unaccountable it was.