8 Bible Verses about Unforgivable Sin

Therefore I tell you, people will be forgiven of every sin and abusive word spoken [against God]. But abusive words spoken against the Holy Spirit will not be forgiven. And whoever speaks an [abusive] word against the Son of man will be forgiven [of it], but whoever speaks [an abusive word] against the Holy Spirit will not be forgiven [of it], not in this world nor the one to come.

Truly I tell you, all of mankind's sins and the abusive language that they use in speaking against God [and men] can be forgiven. But the person who speaks against the Holy Spirit can never be forgiven, for he is guilty of a never ending sin."

And every person who speaks an [abusive] word against the Son of man will be forgiven of it, but the person who speaks abusive words against the Holy Spirit will not be forgiven of it.

For if we go on sinning intentionally, after we have received the full knowledge of the truth, there is no longer any sacrifice for [our] sins. Instead, [there will be] a fearful expectation of [coming] judgment and of [God's] raging fire which will consume His enemies. The person who has disregarded the law of Moses is put to death without being shown mercy on the testimony of two or three witnesses.read more.
How much more severely do you think a person deserves to be punished who has trampled on the Son of God and has regarded the blood of the [New] Agreement, with which he was set apart for God, an unholy thing and has insulted the Holy Spirit, through whom God's unearned favor is shown?

Jesus said all this because these experts in the law of Moses had been saying, "He has an evil spirit in him."

But when the Pharisees heard this, they said, "This man does not drive out evil spirits except by [the power of] Beelzebub, the chief of evil spirits."

And the experts in the law of Moses who had come down from Jerusalem were saying [Note: This followed the incident of Jesus healing a man with an evil spirit. See Matt. 12:22-28], "He has Beelzebub [in him]," and "He is driving out evil spirits by [the power of] the chief of evil spirits."

But some of the people said, "He is driving out evil spirits by [the power of] Beelzebub, the chief of evil spirits."