John 21:7 identifies the beloved disciple as the one who recognized Jesus. Here Peter sees that same disciple following.

John 21:24 reveals the beloved disciple as the author and witness. This verse names him as the one Peter saw.

John 13:23-26 describes the beloved disciple leaning on Jesus and asking about the betrayer. This verse explicitly references that event.

John 20:2 introduces 'the other disciple, whom Jesus loved' as a companion of Peter. This is the same disciple seen following in 21:20.

John 19:26 also identifies the beloved disciple at the cross — reinforcing his intimate presence at key moments in Jesus' life.