8 Bible Verses about The Unpardonable Sin

Wherefore I say to you, All manner of sin and blasphemy shall be forgiven to men; but the blasphemy of the Holy Ghost shall not be forgiven to men. And whosoever speaketh against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, nor in that to come.

But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is liable to eternal damnation:

But Peter said, Ananias, why hath Satan filled thy heart, to lie to the Holy Ghost?

as your fathers, so do ye.

And grieve not the Holy Spirit of God, whereby ye are sealed unto the day of redemption.

Quench not the Spirit.

Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and counted the blood of the covenant, by which he hath been sanctified, an unholy thing, and done despite to the spirit of grace?

If any one see his brother sin a sin which is not unto death, let him ask, and he will give him life for them that sin not unto death.