And also why would a person deny this gift unless they have rejected It In their heart which would be the unforgivable sin and when a person gets like that there Is no longer ANY conviction from the HOLY SPIRIT.But are the demons saved? Blasphemy of the Holy Spirit is the unforgivable sin. We blasphemy the Spirit when we reject the Spirits call to faith in Jesus Christ. As long as one stays in rebellion and denies the gift of grace how can they be saved? It takes much more than intellectual knowledge of God the Father. It takes knowing the Son.
John 14:6
New International Version
6 Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me.
sidenote:There Is a difference In rejecting from the heart and rejecting In words.A person rejecting from the heart wouldn’t care.