I used to think that blasphemy against the Holy Spirit was against the 3rd person of the Trinity, but I read something that totally makes more sense.
Read this:
Quote:
Mat 12:32 And whoever speaks a word against the Son of Man, it shall be forgiven him. But whoever speaks against the Holy Spirit, it shall not be forgiven him, either in this world or in the world to come.
Now... The word “ghost” means “spirit,” and probably refers here to the “divine nature” of Christ...