John 9:2

9:2 His disciples asked him, “Rabbi, who committed the sin that caused him to be born blind, this man or his parents?”

John 9:18-20

9:18 Now the Jewish religious leaders refused to believe that he had really been blind and had gained his sight until at last they summoned the parents of the man who had become able to see. 9:19 They asked the parents, “Is this your son, whom you say was born blind? Then how does he now see?” 9:20 So his parents replied, “We know that this is our son and that he was born blind.

John 9:25

9:25 He replied, “I do not know whether he is a sinner. I do know one thing – that although I was blind, now I can see.”