John foresaw the perennial error

"The other three gospels—Matthew, Mark, Luke—are called the synoptic gospels, because they have largely the “same view” of Jesus and record many of the same incidents.

But the Gospel According to John is very different. 

Its focus is the divinity of Christ. 

John wanted to show Jesus as divine, as THE Son of God. 

He tells us, in John 20:30-31 that Jesus did many things that he hasn’t put in his book, but the incidents he has chosen, he specifically chose so that, “you may believe that Jesus is the Christ, the Son of God, and that believing you may have life in His name.”

It seems that John foresaw what would become the perennial error or heresy about Jesus Christ: That He was just another man. 

A wise man, a good man, a moral example, even a prophet (as the Muslims allow), but ultimately just another man." 

David Read