No, disagreeing with a sin is not blasphemy against the Holy Spirit. In fact, disagreeing with sin is often seen as a positive thing, as it can be a sign of a healthy conscience and a desire to live a moral life.
Blasphemy against the Holy Spirit is a specific, serious sin mentioned in the Gospels (Matthew 12:31-32, Mark 3:28-30, Luke 12:10). Its exact nature is debated, but it's generally understood to involve:
* Attributing the work of the Holy Spirit to Satan: Specifically, knowingly and intentionally attributing the good works and miracles performed by Jesus (through the power of the Holy Spirit) to demonic forces.
* A deliberate, malicious rejection of God's grace: A conscious and persistent refusal to acknowledge the truth and goodness of God, even when confronted with clear evidence. Some theologians interpret it as a final, hardened state of unbelief and rejection of God's offer of salvation.
Disagreement with a sin, on the other hand, is not the same as rejecting the Holy Spirit. It is possible to disagree with a particular action or behavior without rejecting the Holy Spirit or attributing God's work to Satan. In fact, the Holy Spirit often convicts people of sin, leading them to repentance and a desire to live a more righteous life.
Therefore, disagreeing with a sin is not blasphemy against the Holy Spirit.