What does John 9:15 mean?
This is the second time that a man, born blind but healed by Jesus, has been asked to explain "how" he was healed (John 9:10). He'll be asked yet again in this story by these same Pharisees (John 9:24–26), and after his parents are posed the same question (John 9:19). His answer is consistent and truthful: Jesus put mud on his eyes and told him to wash, resulting in sight.The Pharisees' reaction to this miracle illustrates the dangers of self-centered, tradition-bound spirituality. Jesus' healing miracle (John 9:14) occurred on a Sabbath day. The Pharisees were famous for elaborate, rigid rules and laws. These developed from tradition, seeking to ensure Israel's obedience to the laws of Moses. The Pharisees claim Jesus' actions directly violate their interpretations of holiness. They're right. Jesus' actions do conflict with their traditions. In fact, this seems to be the point; Jesus purposefully tries to show that their shallow approach is not what God intends (John 7:22–24).
John also shows how easily human beings choose to equate their own opinions with those of God (John 9:16). John includes seven "signs" in this gospel. These are seven miracles meant to prove that Jesus is, in fact, the Messiah. The Old Testament predicted that the Promised One would heal blindness (Isaiah 29:18; 35:5; 42:7). Only Jesus is credited with this ability in Scripture. However, the Pharisees cannot accept that Jesus' work is divine, for no other reason than because He disagrees with their specific doctrine.