Kevin O'Keeffe Great Bible Study. I am learning so must from book of John personally. Jesus is not just the Great Saviour of mankind, but he is also the Great Teacher. John Chapter 9 begins with a blind man that JESUS opens the eyes of, and at the end of the Chapter, you have religious leaders who are also blind. They reject and deny the Miracle that was done, despite all the evidence. "therefore your sin remaineth"