'Sinner' in the Bible

Which of you is able truly to say that I am a sinner? If I say what is true, why have you no belief in me?

Then some of the Pharisees said, That man has not come from God, for he does not keep the Sabbath. Others said, How is it possible for a sinner to do such signs? So there was a division among them.

So they sent a second time for the man who had been blind and they said to him, Give glory to God: it is clear to us that this man is a sinner.

He said in answer, I have no knowledge if he is a sinner or not, but one thing I am certain about; I was blind, and now I see.