Who was before a blasphemer, and a persecutor, and injurious: but I obtained mercy, because I did it ignorantly in unbelief. [1 Tim.1:13]
Saul was a serial killer, like Hitler & others. He was an Inquisitor, persecutor & murderer of those of faith in Jesus. He compelled them to blaspheme, both men and women.
Yet he received mercy because he acted in unbelief & ignorance (1 Tim.1:13). Just as millions of others who have already died in such a condition of unbelief & ignorance shall receive mercy.
“Father, forgive them, for they know not what they do”, Jesus prayed on the cross.
Like serial killer Inquisitionist Saul, who had not blasphemed the Holy Spirit, neither have those who have died in unbelief and ignorance. Therefore they SHALL be pardoned. Jesus said so:
28 Verily, I am saying to you that all shall be pardoned the sons of mankind, the penalties of the sins and the blasphemies, whatsoever they should be blaspheming, 29 yet whoever should be blaspheming against the holy spirit is having no pardon for the eon, but is liable to the eonian penalty for the sin-" 30 for they said, “An unclean spirit has he.” (Mark 3, CLV)
31 Therefore I am saying to you, Every sin and blasphemy shall be pardoned men, yet the blasphemy of the spirit shall not be pardoned."
32 And whosoever may be saying a word against the Son of Mankind, it will be pardoned him, yet whoever may be saying aught against the holy spirit, it shall not be pardoned him, neither in this eon nor in that which is impending. (Mt.12:31-32, CLV)
Since there are Scriptures speaking of multiple future ages (i.e. eons) to come (Eph.2:7; Rev.11:15, etc), there is the possibility that this sin against the Holy Spirit may be pardoned after the coming age. In fact it will be:
Rom 5:18 Consequently, then, as it was through one offense for all mankind for condemnation, thus also it is through one just act for all mankind for life’s justifying."
Rom 5:19 For even as, through the disobedience of the one man, the many were constituted sinners, thus also, through the obedience of the One, the many shall be constituted just."