Unpardonable Sin1
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Dr. Paul Manuel—2012
If a person commits a crime—be it shoplifting, selling drugs, even murder—our society has determined the appropriate consequence or penalty for such a crime—be it a fine, jail time, even execution. That penalty is the temporal payment society demands from an individual who breaks the law, a payment he must make to absolve his guilt before society. (In Israelite society, animal sacrifices were also a means of temporal payment.) The demands of society, the penalties its courts exact, apply only in this life. Beyond that point, a person falls exclusively under God's jurisdiction and answers to Him alone.
When human law corresponds to God's law, there is an eternal payment He demands from the transgressor, a payment that individual must make to absolve his guilt before God. That eternal payment, however, is beyond anything the offender can afford—no fine he can pay, no time he can serve, no animal sacrifice he can make, not even offering his own life. The only payment sufficient to absolve his guilt before God, and the only payment God accepts, is what Jesus made on the cross. Understanding this distinction between what is temporal, affecting only this life, and what is eternal, affecting also the next life, is essential to understanding the nature and consequence of unpardonable sin.
When the biblical authors talk about specific sins,2 they make some careful distinctions. Certain offenses are more serious than others, and the penalty God demands for disobedience is appropriate to their gravity. One of the main tenets of Israel's faith, a declaration appearing repeatedly in scripture, is that "the LORD [is a] gracious God, slow to anger, abounding in love and faithfulness... and forgiving wickedness, rebellion and sin" (Exod 34:6-7a).3 Were this not an accurate description of His character, we would surely perish. Nevertheless, we also read in scripture about unpardonable sin, iniquity beyond God's power to forgive.4 What could be so heinous that it renders the offender unredeemable?5