In studying what makes the unpardonable sin ‘unpardonable’, I ran across this quote that gets directly at the heart of the matter. The Bible is very clear that sin comes from the heart, and in the case of Blaspheming the Holy Spirit, this truth holds especially firm:
” The phrase “being (ontes) wicked” reflects a present tense participle, and the subsequent verb “speaks” (lalei) also is a present form. The resolute, evil charges against the Son of God were an index to the concrete-like, malevolent quality that encrusted their hearts. These men were not simply making an ignorant mistake. They were deliberate, dug-in enemies of truth. They would hang on to their sinful disposition till the end, and that rebellion would follow them into eternity, hence, an “eternal sin.” -WJ