Albert Barnes Commentary John 3:32

"What he hath seen and heard, of that he beareth witness; and no man receiveth his witness." — John 3:32 (ASV)

And what he hath seen, etc. See John 3:11.

No man receiveth his testimony. The words no man are here to be understood in the sense of few. Though his doctrine is pure, plain, sublime, yet few, comparatively, received it in faith. Though multitudes came to him, drawn by various motives (John 6:26), yet few became his real disciples (Matthew 26:56; Matthew 7:22).

His testimony. His doctrine. The truth to which he bears witness as having seen and known it (John 3:11). Often many persons appear for a time to become the followers of Christ, who in the end are seen to have known nothing of religion (Matthew 13:6; Luke 8:13).