This is an idea based on something I heard, but can't remember where. I'd be interested to know what people think of this, and feel free to tear it apart if its nonsense!
In Mark 3 it says this:
22And the teachers of the law who came down from Jerusalem said, "He is possessed by Beelzebub[1] ! By the prince of demons he is driving out demons."
23So Jesus called them and spoke to them in parables: "How can Satan drive out Satan? 24If a kingdom is divided against itself, that kingdom cannot stand. 25If a house is divided against itself, that house cannot stand. 26And if Satan opposes himself and is divided, he cannot stand; his end has come. 27In fact, no one can enter a strong man's house and carry off his possessions unless he first ties up the strong man. Then he can rob his house. 28I tell you the truth, all the sins and blasphemies of men will be forgiven them. 29But whoever blasphemes against the Holy Spirit will never be forgiven; he is guilty of an eternal sin."
30He said this because they were saying, "He has an evil spirit."
Which is repeated in Metthew 12:
31And so I tell you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven. 32Anyone who speaks a word against the Son of Man will be forgiven, but anyone who speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come.
Now what is this unpardonable sin? Is it conceivable that this sin, the blasphemy against the spirit, is to have knowledge of it yet deny it? By this idea, one can say that having heard the Christian Gospel, if one rejects it and never accepts it, then one has commited an unpardonable sin. However, one cannot commit this sin, if one never encouters the holy spirit (ghost).
In genesis 15, "Abram believed the LORD, and He credited it to him as righteousness. " Is this an example of doing the opposite?
This is just a random theory, probably with many holes, but Id be interested to hear peoples opinions on this.
Alex