9 Bible Verses about The Unpardonable Sin

Therefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Spirit shall not be forgiven unto men. And whosoever speaks a word against the Son of man, it shall be forgiven him: but whosoever speaks against the Holy Spirit, it shall not be forgiven him, neither in this world, nor in the world to come.

But they rebelled, and grieved his holy Spirit: therefore he turned to be their enemy, and he fought against them.

But he that shall blaspheme against the Holy Spirit has never forgiveness, but is in danger of eternal judgment:

But Peter said, Ananias, why has Satan filled your heart to lie to the Holy Spirit, and to keep back part of the price of the land?

You stiff-necked and uncircumcised in heart and ears, you do always resist the Holy Spirit: as your fathers did, so do you.

And grieve not the holy Spirit of God, by whom you are sealed unto the day of redemption.

Quench not the Spirit.

Of how much worse punishment, suppose you, shall he be thought worthy, who has trodden under foot the Son of God, and has counted the blood of the covenant, with which he was sanctified, an unholy thing, and has done insult unto the Spirit of grace?

If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it.