Q. I have a non believer friend who has recently confessed that he denied the existence of the Holy Spirit. By denying the existence of the holy spirit has he committed the eternal sin and will forever be lost?
A. Denying the existence of the Holy Spirit is a really silly thing to do, because no one can prove He doesn’t exist, but it’s not the unforgivable sin. In Matt. 12:24 some Pharisees said that Jesus performed His miracles through the power of Satan. In verses 31-32 Jesus said that speaking against the Holy Spirit was a sin that would not be forgiven. He was referring to their claim about Satan being the power behind the Lord’s miracles.
They knew the Scriptures, had interviewed eye witnesses, and were knowledgeable about both Satan and the Holy Spirit. Therefore they were responsible for their actions. Your friend and others like him who think it’s smart to taunt the Lord like this haven’t a clue as to what they’re talking about. They were best described in Psalm 14:1 “The fool has said in his heart, “There is no God.”
By the very fact that he’s an unbeliever, your friend has been denying the existence of the Holy Spirit all along. What’s the big deal in denying the existence of someone you already don’t believe in? Pray that the Lord will reveal Himself to your friend and will forgive him for sins committed in ignorance.