Think about everything you've just read in John's Gospel. It feels pretty complete, right? But John tells us it's just a snapshot.
John concludes his Gospel by revealing that the signs he's recorded are only a fraction of Jesus' miraculous work. He says, 'many other signs truly did Jesus... which are not written in this book.'
This tells us Jesus' ministry was incredibly vast and impactful. The Gospels give us a curated selection, focusing on key events and teachings that reveal who Jesus is. But the reality of His time on earth was even more extensive than what we can read.