What makes blasphemy against the Holy Ghost so evil that its sinful consequences is going to a Hell afterlife?

I am spiritually curious why blasphemy against the Holy Ghost is so wicked that its sinful consequences are a doomed fate to Hell afterlife after bodily death.

Do any of you know why this may be the case? Do you think this sin should be forgiven like all other sins or not? God seems to think so.

Please share your thoughts on blasphemy against the Holy Ghost!
Because it is spiritual mockery of God's work
Vote A
Because people who commit it has eternal unforgiven hearts
Vote B
Another reason (name it)
Vote C
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What makes blasphemy against the Holy Ghost so evil that its sinful consequences is going to a Hell afterlife?
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