That is (outo estin). The one just mentioned in verse Hebrews 20 , "the disciple whom Jesus loved." And wrote these things (kai o grapsa 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.