Forgiveness Blasphemy of the Holy Spirit Here is a conundrum, If we take what Jesus said in the Bible I find there is a problem with this particular sin - Could it be that the early church added it to make a point about something else and unfortunately our generation ran with it.


  Matthew 6:14 For if you forgive men when they sin against you, your
  heavenly Father will also forgive you.  But if you do not forgive men
  their sins, your Father will not forgive your sins.
  
  Matthew 26:28 This is my blood of the covenant, which is poured out
  for many for the forgiveness of sins.
  
  Matthew 7:21 “Not everyone who says to me, ‘Lord, Lord,’ will enter
  the kingdom of heaven, but the one who does the will of my Father who
  is in heaven. On that day many will say to me, ‘Lord, Lord, did we not
  prophesy in your name, and cast out demons in your name, and do many
  mighty works in your name?’ And then will I declare to them, ‘I never
  knew you; depart from me, you workers of lawlessness.’
  
  John 14:23 Jesus answered him, “If anyone loves me, he will keep my
  word, and my Father will love him, and we will come to him and make
  our home with him.
  
  John 5:24 Truly, truly, I say to you, whoever hears my word and
  believes him who sent me has eternal life. He does not come into
  judgment, but has passed from death to life.
  
  John 11:25 Jesus told her, "I am the resurrection and the life. Anyone
  who believes in me will live, even after dying. Everyone who lives in
  me and believes in me will never ever die. Do you believe this,
  Martha?"


Versus this


  Matthew 12:31-32 31 And so I tell you, every kind of sin and slander
  can be forgiven, but blasphemy against the Spirit will not be
  forgiven. 32 Anyone who speaks a word against the Son of Man will be
  forgiven, but anyone who speaks against the Holy Spirit will not be
  forgiven, either in this age or in the age to come.


However
If we look closely - Jesus said every kind of sin and slander can be forgiven,  Then he said that one sin will not be forgiven - How can this be?!  You cannot say every sin and then say - except one!

Further if we look at the scriptures above Jesus explicitly says that those who believe in him will inherit eternal life!  How can this be - Surely he should have put a stipulation that Blasphemy can cause one to loose this eternal life!  Considering this sin is the Greatest of All and the Only one that can catch us out it is very odd that this was not elabourated on more!  Not even by his desciples!
To put these Scriptures in proper perspective. The first thing we have to do is to understand what Jesus meant by blaspheming.
According to Merriam Webster blaspheming is defined as:
BLASPHE'ME, v.t. [Gr. The first syllable is the same as in blame, blasme, denoting injury; L. loedo, loesus; The last syllable is the Gr.,to speak.]

To speak of the Supreme Being in terms of impious irreverence; to revile or speak reproachfully of God, or the Holy Spirit. 1 Ki 21. Mark 3.

To speak evil of; to utter abuse or calumny against; to speak reproachfully of.


BLASPHE'ME, v.i. To utter blasphemy.
He that shall blaspheme against the Holy Spirit shall not be forgiven. Mark 3.

To arrogate the prerogatives of God.

This man blasphemeth. Who can forgive sins but God? Math.9. Mark 2.
So let's break it down and see if we can determine exactly what blaspheme meant to Jesus and the circumstances under which it was used.
Starting with the definition of blaspheme we see that it has two parts. The first part is to blame to the point of injury, while the second part denotes speaking. We also note that it is both a transitive to transitive verb, and that in the instance in which Jesus stated that is in the intransitive form a of the verb.
So let's look at the situation and find out what the circumstances were when Jesus made this statement. This

Matthew 12:22 through 24  Then was brought unto him one possessed with a devil, blind, and dumb: and he healed him, insomuch that the blind and dumb both spake and saw. And all the people were amazed, and said, Is not this the son of David? But when the Pharisees heard it, they said, This fellow doth not cast out devils, but by Beelzebub the prince of the devils.

We find here that Jesus had just cast out a devil from a dumb and blind man. They are attributing his ability to cast out the devil to being possessed by Satan.

Matthew 12:25 through 27  And Jesus knew their thoughts, and said unto them, Every kingdom divided against itself is brought to desolation; and every city or house divided against itself shall not stand: And if Satan cast out Satan, he is divided against himself; how shall then his kingdom stand?   And if I by Beelzebub cast out devils, by whom do your children cast them out? therefore they shall be your judges.

Jesus having the ability to read their thoughts understood what they were saying was embedded deeper than just the surface. Then he says that they're not making sense, since it is Satan's desire to take people away from God why would he get rid of a devil which was doing exactly what he wanted. Finally he says if that's what I'm doing how can you expect that you and those following you could ever overcome Satan and take people to heaven?

Matthew 12:30  He that is not with me is against me; and he that gathereth not with me scattereth abroad.

Jesus further says that if they're not helping him to get people saved what they are doing is aiding Satan. It appears then that what Jesus is doing is, he is warning him that they are very very close to condemning themselves before God by causing someone to not Believe. This becomes more clear when we consider the following Scriptures.

Matthew 18:6 and 7 But whoso shall offend one of these little ones which believe in me, it were better for him that a millstone were hanged about his neck, and that he were drowned in the depth of the sea. Woe unto the world because of offences! for it must needs be that offences come; but woe to that man by whom the offence cometh!
Matthew 18:10 and 11 Take heed that ye despise not one of these little ones; for I say unto you, That in heaven their angels do always behold the face of my Father which is in heaven. For the Son of man is come to save that which was lost.
Luke 11:10  For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
Luke 11:13  If ye then, being evil, know how to give good gifts unto your children: how much more shall your heavenly Father give the Holy Spirit to them that ask him?