Bible Verses About Offences Against the Holy Spirit: Blasphemy against him, unpardonable

Therefore I say to you: Every sin and blasphemy shall be forgiven men, but the blasphemy of the Spirit shall not be forgiven.

And whosoever shall speak a word against the Son of man, it shall be forgiven him: but he that shall speak against the Holy Ghost, it shall not be forgiven him neither in this world, nor in the world to come.

He that knoweth his brother to sin a sin which is not to death, let him ask: and life shall be given to him who sinneth not to death. There is a sin unto death. For that I say not that any man ask.