Notes from SBTS Chapel
What is the unpardonable sin that leads to death? This death is not physical death, it is eternal death because all sin leads to death. There is a sin that leads to final eternal death.
Roman Catholic Unpardonable Sin
The Roman Catholic church defines two types of sins, venial sin and mortal sin, where the intentions and consent of the committed sin with the effects of the sin are defined only ultimately by the priest in confession and is then prescribed any penance for absolution by the priest.
Protestant Unpardonable Sin
In Luther’s mind, all of sin was mortal sin. Some believe that apostasy is the unpardonable sin but to believe this, our theology and understanding of the gospel must fundamentally change. Others believe that unconfessed, unrepentant sin is the unpardonable sin but to believe this, we fall into a Protestant version of the Roman Catholic problem. The third option is to consider the blasphemy against the Holy Spirit as the unpardonable sin.
Blasphemy Against the Holy Spirit
It is not only attributing the work of the Holy Spirit to demons, but also resisting, disrespecting and rejecting the work of the Holy Spirit. In other words, a final rejection of the gospel that is arguably the unpardonable sin referred by John in the text.
Hard questions like these must be meditated on by the pastor. As questions arise, we must be ready to reply with theologically sound doctrine.