smiddy, I don't remember it either. Here's the current teaching ... I went to the site (sry, just threw up a little in my mouth)
... However, a person can become so set in following a sinful course that he will never change his attitude or conduct. The Bible describes such a person as having “a wicked heart” that has “become hardened by the deceptive power of sin.” (Hebrews 3:12, 13) Like clay that has been fired in a kiln and that can never be reshaped, the person’s heart has become permanently opposed to God. (Isaiah 45:9) There could never be a basis for such a person to be forgiven, so he is guilty of the unforgivable, or unpardonable, sin.—Hebrews 10:26, 27.
Some Jewish religious leaders in Jesus’ day committed the unforgivable sin. They knew that God’s holy spirit was the force behind Jesus’ miracles, yet they maliciously said that he got his power from Satan the Devil.—Mark 3:22, 28-30.