What sin did Jesus say would never be forgiven?
Blasphemy against the Holy Ghost
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.
Matthew 12:31Wherefore 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.
Matthew 12:31