Matthew 12
24 But when the Pharisees heard it, they said, This fellow doth not cast out devils, but by Beelzebub the prince of the devils.
31 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.
32 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.
Boy are you on the wrong thread! A week doesn't go by that I am not told that I am following the devil straight to hell!
SD
As a Pentecostal, let me put in a good word for my misguided dispensationalist brethren :)
I do not think differing over the issue of the Baptism of the Holy Spirit or tongues or other "Holy Ghost" phenomena is anywhere in the vicinity of blaspheming the Holy Spirit.