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What sin did Jesus say was unforgivable?

The question of the unforgivable sin is one that has troubled many Christians. We know that Jesus preached a message of love, forgiveness and redemption. So how could there be a sin that is unforgivable? In this article, we will examine the biblical evidence to understand what Jesus meant when he spoke about the unforgivable sin.

The Sin Against the Holy Spirit

The unforgivable sin that Jesus spoke of is known as the “blasphemy against the Holy Spirit”. Jesus mentioned this sin in the following passages:

And whoever speaks a word against the Son of Man will be forgiven, but whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come (Matthew 12:32)

Truly, I say to you, all sins will be forgiven the children of man, and whatever blasphemies they utter, but whoever blasphemes against the Holy Spirit never has forgiveness, but is guilty of an eternal sin (Mark 3:28-29)

As we can see, this sin is directly contrasted with all other sins which Jesus says can be forgiven. The sin against the Holy Spirit stands out as unique in its severity. But what exactly constitutes this unforgivable sin?

The Context of Jesus’ Teaching

To understand what Jesus meant, we need to examine the context in which he spoke these words. In Matthew 12, Jesus had just healed a demon-possessed man who was blind and mute. The crowds marveled at this miracle, but the Pharisees accused Jesus of operating under the power of Satan rather than the Holy Spirit. It was in response to this accusation that Jesus warned against the unforgivable sin:

But when the Pharisees heard it, they said, “It is only by Beelzebul, the prince of demons, that this man casts out demons.” Knowing their thoughts, he said to them, “Every kingdom divided against itself is laid waste, and no city or house divided against itself will stand. And if Satan casts out Satan, he is divided against himself. How then will his kingdom stand? And if I cast out demons by Beelzebul, by whom do your sons cast them out? Therefore they will be your judges. But if it is by the Spirit of God that I cast out demons, then the kingdom of God has come upon you. Or how can someone enter a strong man’s house and plunder his goods, unless he first binds the strong man? Then indeed he may plunder his house. Whoever is not with me is against me, and whoever does not gather with me scatters. Therefore I tell you, every sin and blasphemy will be forgiven people, but the blasphemy against the Spirit will not be forgiven. And whoever speaks a word against the Son of Man will be forgiven, but whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come (Matthew 12:24-32).

Jesus makes it clear that he performed this healing miracle by the power of the Holy Spirit. But the Pharisees, despite seeing the evidence before their own eyes, attributed Jesus’ power to Satan rather than the Spirit. It was this hardening of their hearts even in the face of God’s power that Jesus said could not be forgiven.

The Nature of the Unforgivable Sin

Based on the context, we can infer certain characteristics about the nature of this unforgivable sin:

  • It involves attributing the work of the Holy Spirit to evil forces rather than recognizing it as from God.
  • It demonstrates a willful hardening of one’s heart against God and his Spirit, even when presented with evidence of the Spirit’s work.
  • It involves rejecting Christ by assigning his miracles to Satan’s power rather than acknowledging Christ’s divine authority.

The unforgivable sin is thus not just a momentary slip of the tongue or a fleeting doubt. Rather, it reflects an intentional, ongoing rejection of the saving power of the Holy Spirit and attributing his work to evil. This sin rejects the convicting, redeeming work of the Spirit to bring sinners to repentance and faith.

Who Can Commit This Sin?

An important question is who can commit this unforgivable sin Jesus spoke of? Theologians have offered differing perspectives:

  • Unbelievers only: Some argue only those who reject Christ until death can commit this sin. For believers, the Holy Spirit already dwells within, thus they have not rejected the Spirit’s power.
  • Believers also: Others propose even genuine Christians could commit this sin through a wholesale rejection of the Spirit’s work in their lives. However, most see this as forfeiting one’s faith and salvation.
  • Hypothetical sin: Some scholars see this sin as hypothetical – since no one who has experienced and attributed the Spirit’s work to God would then attribute it to Satan, this sin is virtually impossible for a true Christian.

The most common view is that this sin requires total, willful rejection of the Spirit’s work until death. While possible in theory for believers, it would essentially constitute apostasy demonstrating the person was never saved. Warnings about this sin urge us to accept rather than reject the Spirit’s work.

Is This Sin Still Possible Today?

Given these perspectives, is it possible for people to commit this unforgivable sin today? Some key considerations:

  • Jesus’ warning was addressed in a specific context to people who witnessed his miracles firsthand but still rejected him.
  • For people today, permanently rejecting the Spirit’s work until death without any opportunity for repentance would require full knowledge of that work and still attributing it to evil.
  • Most scholars agree it is unlikely for anyone today to meet these criteria. The warnings are hypothetically severe more than likely in practice.
  • Overall, the main application is to accept rather than reject the Spirit’s work in bringing people to repentance and faith when we have opportunity.

So in summary, while possible in theory, committing the unforgivable sin today seems improbable. The main application is to keep our hearts open to the Holy Spirit’s work in our lives.

Practical Application

How then should we apply Jesus’ warning about this sin in our lives today as believers? Here are a few key lessons:

  • Have a healthy fear of sin – willful, unrepentant sin is dangerous territory.
  • Keep short accounts with God – continually keep our hearts sensitive to the Holy Spirit’s conviction and repent of any sin.
  • Cultivate spiritual wisdom – learn to accurately discern the Spirit’s work compared to counterfeits.
  • Extend grace to others – don’t be quick to label others’ sins as unforgivable, but point them to hope in Christ.
  • Rest in God’s forgiveness – keep believing God’s promise that all confessed sin is under the blood of Christ.

The warning about the unforgivable sin highlights the seriousness of hardening our hearts to God. But for those trusting in Christ, our hope rests securely in his limitless grace and power to forgive and transform even the hardest hearts.

Historical Interpretations

Throughout church history, there have been various perspectives on the unforgivable sin:

  • Early church: Many early church fathers saw this sin as limited to the Pharisees who rejected Christ against the evidence before them. The severity of their punishment matched the weight of their privilege in seeing Jesus’ miracles firsthand.
  • Middle Ages: During medieval times, more focus was given to outward acts constituting sin. Some compiled lists of specific crimes deemed unforgivable. Others debated if unconfessed mortal sins could be unpardonable.
  • Reformation: Reformers emphasized that all sin can be forgiven through genuine repentance and faith in Christ. However, persistently rejecting the Spirit’s work until death risked being an unforgivable state of hardness.
  • Modern times: Contemporary views focus on the willful, ongoing rejection of the Spirit’s work in a person’s life. But cases of such persistent rejection until death are seen as hypothetical rather than likely realities.

Throughout church history, no consensus exists on precisely defining this sin. The main themes are rejecting the Spirit’s work despite His powerful witness, and the dire state of unrepentance leading to judgment.

Objections and Questions

Some common objections people raise regarding the unforgivable sin include:

  • What if I worried I committed this sin? The very fact you are concerned suggests the Spirit is still at work convicting your heart, demonstrating you have not committed the unforgivable sin.
  • What about other terrible sins? While this sin is uniquely grave, Scripture affirms God can forgive any sin when we repent and believe the gospel, no matter how terrible it is.
  • Can God revoke forgiveness? No, for true believers in Christ, God’s forgiveness is permanent and irreversible, based on Christ’s finished work, not our performance.
  • Doesn’t this contradict grace? While this warning seems severe, it highlights the seriousness of rejecting grace persistently. It should drive us to Christ, not away from Him.

Properly understood, Jesus’ teaching underscores the urgent need to receive God’s grace through faith, not contradict it. We can hold this warning and God’s unlimited forgiveness in biblical tension.


In summary, the unforgivable sin Jesus warned about involves the willful, ongoing rejection of the Holy Spirit’s work in a person’s life, attributing it to evil rather than God. While Hypothetically possible for unbelievers and perhaps believers who apostatize, it requires meeting stringent criteria that seem improbable today.

For believers who have placed their faith in Christ, we can have confidence that His death covers all our sins when repented of. This sin highlights the importance of keeping our hearts soft to the Holy Spirit’s conviction rather than hardening ourselves to Him. With humble and repentant hearts, we can receive God’s grace and forgiveness to walk faithfully with Him all our days.