Commentaries:
Adam Clarke
Knew not that it was Jesus - Probably because it was either not light enough, or he was at too great a distance, or he had assumed another form, as in Mark 16:12; otherwise his person was so remarkable that all his disciples readily knew him when he was at hand: see John 21:12.
Other Adam Clarke entries containing John 21:4:
John 1:45
John 21:12
Acts 1:3
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