John 9:1-41 KJV -  And as Jesus passed by, he saw a man which was blind from his birth.  And his disciples asked him, saying, Master, who did sin, this man, or his parents, that he was born blind?  Jesus answered, Neither hath this man sinned, nor his parents: but that the works of God should be made manifest in him.
Sometimes bad stuff just happens. Now in this guy's case, it was for the glory of God.
 I must work the works of him that sent me, while it is day: the night cometh, when no man can work.  As long as I am in the world, I am the light of the world.  When he had thus spoken, he spat on the ground, and made clay of the spittle, and he anointed the eyes of the blind man with the clay,  And said unto him, Go, wash in the pool of Siloam, (which is by interpretation, Sent.) He went his way therefore, and washed, and came seeing.
So what do we have so far? The guy has been blind his whole life. Back then wasn't like today where there was a Rescue Mission, or agencies to help disabled folks, or anything. If you were blind, you were pretty much hopeless and useless, just taking up space and born waiting to die.
Blind guy probably spent each day parked on a corner, begging. Being blind, he probably got ripped off a lot by the other beggars who weren't blind. We don't know that, but it's probably a safe guess.
Being blind, though, the man was no doubt a good listener. People walking by would talk about this mysterious Jesus man, who did miracles, and gave away free fish and bread in big gatherings. Pharisees would walk by and complain about this blaspheming womanizing drunk guy Jesus who went around creating trouble.
Well, the guy, being blind, heard it all. He probably wondered if the miracle worker could do one for him. In this man's story, though, Jesus came upon him.
 The neighbours therefore, and they which before had seen him that he was blind, said, Is not this he that sat and begged?  Some said, This is he: others said, He is like him: but he said, I am he.  Therefore said they unto him, How were thine eyes opened?  He answered and said, A man that is called Jesus made clay, and anointed mine eyes, and said unto me, Go to the pool of Siloam, and wash: and I went and washed, and I received sight.  Then said they unto him, Where is he? He said, I know not.  They brought to the Pharisees him that aforetime was blind.
Thanks a lot, neighbors. What kind of neighbors are these people anyway? You'd think they would be happy that the guy wasn't blind anymore.
 And it was the sabbath day when Jesus made the clay, and opened his eyes.  Then again the Pharisees also asked him how he had received his sight. He said unto them, He put clay upon mine eyes, and I washed, and do see.  Therefore said some of the Pharisees, This man is not of God, because he keepeth not the sabbath day. Others said, How can a man that is a sinner do such miracles? And there was a division among them.
Even the Pharisees were not in total agreement. Some of them had the nerve to state the obvious, "How can a man that is a sinner do such miracles?"
 They say unto the blind man again, What sayest thou of him, that he hath opened thine eyes? He said, He is a prophet.  But the Jews did not believe concerning him, that he had been blind, and received his sight, until they called the parents of him that had received his sight.  And they asked them, saying, Is this your son, who ye say was born blind? how then doth he now see?
Seems like the Pharisees are on a blame-seeking mission. They don't even believe the guy was blind, and without a doubt many of them passed the blind man each day on their way to the temple. So they go after the man's parents!
 His parents answered them and said, We know that this is our son, and that he was born blind:  But by what means he now seeth, we know not; or who hath opened his eyes, we know not: he is of age; ask him: he shall speak for himself.  These words spake his parents, because they feared the Jews: for the Jews had agreed already, that if any man did confess that he was Christ, he should be put out of the synagogue.  Therefore said his parents, He is of age; ask him.
The parents don't want to get roped into this whole mess. I'm sure they were pretty used to life going along each day, with their son being blind. He may have been blind, but he was probably never in trouble with the law until today.
 Then again called they the man that was blind, and said unto him, Give God the praise: we know that this man is a sinner.
That wins the prize for the most contradictory sentence in the entire Bible.
 He answered and said, Whether he be a sinner or no, I know not: one thing I know, that, whereas I was blind, now I see.
The summary of the gospel, from the opened eyes of a blind man. Is there really anything you can add to that? Once I was blind, now I see.
Do you believe in Jesus? Why not? This man did nothing to receive his sight or his salvation; Jesus did the work. All this man can tell the world is "One thing I know, once I was blind, now I see."
 Then said they to him again, What did he to thee? how opened he thine eyes?  He answered them, I have told you already, and ye did not hear: wherefore would ye hear it again? will ye also be his disciples?
I love this guy! This man's life in Jesus is barely hours old, and he possesses the boldness of a lion. "What, you want to hear it twice?"
 Then they reviled him, and said, Thou art his disciple; but we are Moses' disciples.  We know that God spake unto Moses: as for this fellow, we know not from whence he is.  The man answered and said unto them, Why herein is a marvellous thing, that ye know not from whence he is, and yet he hath opened mine eyes.  Now we know that God heareth not sinners: but if any man be a worshipper of God, and doeth his will, him he heareth.  Since the world began was it not heard that any man opened the eyes of one that was born blind.  If this man were not of God, he could do nothing.  They answered and said unto him, Thou wast altogether born in sins, and dost thou teach us? And they cast him out.
This man had a pretty productive day. He met Jesus. He received his sight. He brought forth the most simple and accurate story of faith one could have. He gave his one sentence testimony to the leaders of the day, and for his troubles he was excommunicated. But the best was yet to come.
 Jesus heard that they had cast him out; and when he had found him, he said unto him, Dost thou believe on the Son of God?  He answered and said, Who is he, Lord, that I might believe on him?  And Jesus said unto him, Thou hast both seen him, and it is he that talketh with thee.  And he said, Lord, I believe. And he worshipped him.
"Lord, I believe." Again, the blind man has the most profound of answers. Is there again anything else to add? Do you believe? Why not? Did the blind man do anything to earn his salvation? No.
John 14:6 KJV -  Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
The only thing that could heal the blind man was Jesus, and the only way anybody will spend eternity in Heaven is through Jesus.
Romans 3:23 KJV -  For all have sinned, and come short of the glory of God;
Romans 10:9-10 KJV -  That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.  For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
So for you, what will it be? Will you be healed of your sin by Jesus, or spend eternity in blindness and torment?