Q. What is Blasphemy of the Holy Spirit? Why was it not possible to be forgiven of this sin? I’m afraid that I may have committed it. Please help!
22* ¶ The scribes who came down from Jerusalem were saying, "He is possessed by Beelzebul," and "He casts out the demons by the ruler of the demons."
23* And He called them to Himself and began speaking to them in parables, "How can Satan cast out Satan?
24 "If a kingdom is divided against itself, that kingdom cannot stand.
25 "If a house is divided against itself, that house will not be able to stand.
26 "If Satan has risen up against himself and is divided, he cannot stand, but he is finished!
27* "But no one can enter the strong man's house and plunder his property unless he first binds the strong man, and then he will plunder his house.
28* "Truly I say to you, all sins shall be forgiven the sons of men, and whatever blasphemies they utter;
29* but whoever blasphemes against the Holy Spirit never has forgiveness, but is guilty of an eternal sin" —
30* because they were saying, "He has an unclean spirit."
If you believe you have committed Blaspheme of the Holy Spirit you have not. It indicated a condition of the heart that is incapable of feeling guild or concern. Listen to the audio of this answer.