And I knew such a man - It is not uncommon to repeat a solemn affirmation in order that it may be made more emphatic. This is done here. Paul repeats the idea, that he was intimately acquainted with such a man, and that he did not know whether he was in the body or out of the body. All that was known to God.

2 Corinthians 12:3 Parallel Commentaries

Introductory Note to Chapter iii. By the Editor
BY THE EDITOR THE readers, especially those not well acquainted with Scholastic philosophy, will, perhaps, be glad to find here a short explanation of the various kinds. of Vision and Locution, Corporal, Imaginary, and Intellectual. The senses of Taste, Touch, and Smell are not so often affected by mystical phenomena, but what we are about to say in respect of Sight and Hearing applies, mutatis mutandis, to these also. 1. A CORPORAL VISION is when one sees a bodily object. A Corporal Locution is …
Teresa of Avila—The Interior Castle, or The Mansions

The Blessings of Noah Upon Shem and Japheth. (Gen. Ix. 18-27. )
Ver. 20. "And Noah began and became an husbandman, and planted vineyards."--This does not imply that Noah was the first who began to till the ground, and, more especially, to cultivate the vine; for Cain, too, was a tiller of the ground, Gen. iv. 2. The sense rather is, that Noah, after the flood, again took up this calling. Moreover, the remark has not an independent import; it serves only to prepare the way for the communication of the subsequent account of Noah's drunkenness. By this remark, …
Ernst Wilhelm Hengstenberg—Christology of the Old Testament

Christ Our Life.
Colossians 3:4.--Christ who is our life. One question that rises in every mind is this: "How can I live that life of perfect trust in God?" Many do not know the right answer, or the full answer. It is this: "Christ must live it in me." That is what He became man for; as a man to live a life of trust in God, and so to show to us how we ought to live. When He had done that upon earth, He went to heaven, that He might do more than show us, might give us, and live in us that life of trust. It is as we …
Andrew Murray—The Master's Indwelling