This is from the ending of the Gospel of John. Because of this, it would seem that the Gospel is "incomplete." If some of these things were deemed important by the early Church, but wasn't found in the written Scripture (remember the Church came first), who passed them on?
That's pretty flimsy. First it says the bible is not complete. That verse doesn't say that so it is an anti biblical take on the verse. Second, it suggests that the church can be trusted above the scriptures when the bible itself warns again and again about the corruption that will come into the church.