8 Bible Verses about Unforgivable Sin

Therefore, I tell you, every sin and blasphemy shall be forgiven men, but the blasphemy of the Spirit shall not be forgiven men. And if one speaks a word against the Son of man it shall be forgiven him; but if one speaks against the Holy Spirit it shall not be forgiven him either in this life or in that to come.

I tell you truly, That all sins and blasphemies with which they blaspheme shall be forgiven the children of men; but whoever blasphemes against the Holy Spirit shall never have forgiveness, but is the subject of an eternal mistake;

And every one that speaks a word against the Son of man shall have forgiveness; but he that blasphemes against the Holy Spirit shall not be forgiven.

For if we sin willingly after having received the knowledge of the truth, there is no longer a sacrifice left for sins, but a fearful expectation of judgment and fiery indignation, which is about to consume the adversaries. Any one who despised the law of Moses died without mercy by two or three witnesses;read more.
of how much greater punishment do you suppose he will be thought worthy, who has trodden down the Son of God, and accounted defiled the blood of the covenant with which he was purified, and treated injuriously the Spirit of grace.

because they said, He has an impure spirit.

But the Pharisees hearing it, said, This man does not cast out demons, except by Beelzebul, a ruler of the demons.

And the scribes coming down from Jerusalem said, He has Beelzebul, and casts out demons by the ruler of demons.

But some of them said, He casts out demons by Beelzebul, the ruler of demons;