Let us reason together.
What is this sin that hath not forgivness?
The Spirit has revealed to me that this is the sin of the backslider. The ones who turn their back on the plow.
God is a Living God, and so I don't just see this as the traditional form of blasphemy, some sort of cussword or bad speech against the Spirit.
What does this mean to you?
Edit: Slug1 and fewarechosen and soldier4christ by their posts have led me to add an edit. The act of not repenting against the sin of backsliding is the sin against the Holy Spirit. I should have stated the act of staying in the backslide thus denying the Holy Ghost is the sin. Also the act of denying the Holy Spirit that dwells in others.
Thank you all for expanding my understanding of this scripture as God has led you to do.