Commentaries:
Robertson's Word Pictures (NT)
That is (outov estin). The one just mentioned in verse John 21:20, "the disciple whom Jesus loved."
And wrote these things (kai o grayav tauta). Here there is a definite statement that the Beloved Disciple wrote this book.
We know (oidamen). The plural here seems intentional as the identification and endorsement of a group of disciples who know the author and wish to vouch for his identity and for the truthfulness of his witness. Probably we see here a verse added by a group of elders in Ephesus where John had long laboured.
Other Robertson's Word Pictures (NT) entries containing John 21:24:
John 13:23
John 18:15
2 Peter 3:1
1 John 1:1
3 John 1:12
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