Blasphemy against the Holy Spirit is different than when you Blasphemy God using his name as a Curse word, ect. This is a misconception among most people, if this was the case then tons of people would be going to hell without ever getting another chance and it would be something alot of Christians who were not Christians before would have to go to hell for since it would be impossible to be saved after that point, so them becoming a Christian could not even happen in the first place since they cannot be saved from that sin.
What that sin is, is not using God/Jesus's name as a curse word, most people or should I say the average person thinks that is what it is talking about, but that is not what Blasphemy of the Holy Spirit is.
When someone commits Blasphemy of the Holy Spirit there is no hope for them any longer. Blasphemy of the Holy Spirit is more of a rejection of God where in your heart/soul/mind and with all your strength you REJECT GOD and want nothing to do with him even after having 100% knowledge beyond shadow of a doubt he exist, the reason you cannot be saved at that point is because the intent and purpose in your heart is to REJECT GOD for eternity and thus it is impossible to be saved for that reason.
Maybe that sounds a little confusing so let me make it very simple for anyone to understand
Blasphemy of the Holy Spirit would be like the following examples.
Imagine if you were Moses or the people or a person who witnessed the miracles of God happening right before your eyes. Imagine if in person you seen Moses split the red sea in half and you knew 100% with all your heart/soul/mind and strength this was the doing of God.
If you were to BLASPHEMY God and reject God at that point it is UNFORGIVABLE because you have denied God and want nothing to do with God even after seeing all the miracles, all the signs, all the wonders done in front of you.
There is no more hope for you, you had all the knowledge of God and you still rejected it and want nothing to do with God.
THAT is what it means by blasphemy of the holy spirit.
It is like Lucifer who rebelled against God in his presence.
Lucifer committed Blasphemy of the Holy Spirit and therefor there is NO HOPE for him, he cannot be forgiven becasue Lucifer rebelled against God in the PRESENCE of God with 100% knowledge that God exist, that God is the supreme being, and yet still tried to rebel and wanting nothing to do with God.
Those are examples that better explain and give you an idea what committing Blasphemy of the Holy Spirit would look like if you had to imagine it.
It is not just saying God's name in a bad way or cursing God
It is REJECTING GOD COMPLETELY with no intention to ever have a relationship with God, denying God in his undeniable presence and denying the Holy Spirit to ever come into your life to guide you to want to do good.
Imagine if you were God, imagine if you gave a person miracles, signs, and performed all the wonders to let them know you are God, and yet they STILL reject you and want nothing to do with you.
At that point you are lost, if you would not accept God and Obey God at that point there is NOTHING anyone could possible do or show to save you or make you or want you to be saved and obey or have a relationship with God.
So no, if you are seeking God and want a relationship with God that is a sign you have NOT committed blasphemy of the Holy Spirit because if you did you would want nothing to do with God.
That is why it is UNFORGIVABLE, because there is no turning back for a person who has committed that sin, they have chosen to forever separate themselves from God.
And thus God will grant them their request, God will let them spend eternity SEPARATED from his creation and everything that is of God.
OR anther way people like to put it is, that Blasphemy of the Holy spirit is giving glory to Satan saying that God did not work the miracles but Satan did, ect.
The way I look at it is, it is only logical to say if you committed the unforgivable sin it is logical to say that in that persons being they want to REJECT GOD and thus it is unforgivable because they have rejected God completely
I am not a expert on that topic per say but that is my take and what I think it means since that is the only logical way I can see God not giving forgiveness is that the person wants nothing to do with God sort of like How Lucifer rebelled against God there was no hope for Lucifer at that point because Lucifer in his being wanted nothing to do with God thus there is no forgiveness for him.
Once again I will tell everyone, I am not certain 100% but it is currently what I view it as and think it is based on logic and the bible, ect. So go look in the bible and you need to come up with the answer you think the bible states and that is most logical. Some people think it is simply claiming the miracles of God are done in Satans name, others think its something completely different. So its best that we all look into it more and try to understand what exactly it is.