Hi GuitarIntro:
The sin against the Holy Spirit is alluded to 3 times: Matt:1231,32; Mark 3:28-30 and Luke 12:10 In sinning, one may or may not sin against his fellow man, but in all cases he sins against God. Sin may be grouped in 3 ways: 1.pardoned or forgiven sins; 1. pardonable, but yet unpardoned or unforgiven and 3. the unforgiveable sin. The 3rd is the sin of blasphemy of the Holy Spirit.
As I said in an earlier post to you the exact meaning of the sin is stated in Mark's account in vs.30. Surely we admit that any sin we commit that has not been forgiven by the time of our death is unforgiven. But that is NOT what Jesus speaks of here. Its saying Jesus has an unclean, unholy spirit by which he cast out demons, performed miracles and taught etrc.
Jesus had cast out a demon, Matt.12:22. No one ever questioned that miracle, all the Jewish leaders were unable to deny he had performed a miracle. What did those Jewish leaders do? They said Jesus had done by the devil. Those Jews already knew miracles were done by the power of God, Acts 10:38, but were so against Jesus that they attributed the miracle to His having an "unclean spirit." Note, they did not slander Jesus. Jesus had said that words spoken against could be forgiven. They slandered the Holy Spirit by calling Him unclean, that was unforgivenable, in this world or the next.The slander was against the Spirit. Their blasphemy against the Spirit, if allowed to go by, if allowed to be accepted, would defeat the miracles and teachings of Jesus and LEAVE HIM WITH CREDENTIALS THAT HE IS INDEED GOD'S SON AND OUR SAVIOUR. please read John 20:30,31. Hope this helps
Duval