Today we have learned that speaking against i.e. blasphemy of the Precious Holy Spirit is the unpardonable sin that will not be forgiven. -Matthew 12:31-32 Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men. And whosoever speaketh a word 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, neither in the world to come. Notice that it says All manner of sin and blasphemy shall be forgiven unto men but not blasphemy against the Precious Holy Spirit. The Gospel of Mark says in chapter3:28-30 Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme: But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation. Because they said, He (Jesus) had an unclean spirit.