What *was* to come at that time (back when the NT was written - prior to 70 A.D.).
Notice the tense of Hebrews 9 (it doesn't say "He
will mediate a new covenant")
Hebrews 9:15 New Living Translation (NLT)
15 That is why he is the one who mediates a new covenant between God and people, so that all who are called can receive the eternal inheritance God has promised them. For Christ died to set them free from the penalty of the sins they had committed under that first covenant.
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There was a transition period, though......between the OC and new....that's why Hebrews states this (it was obsolete at the time Hebrews was written, it -the OC along with the temple and ancient Jerusalem- has now "disappeared"):
Hebrews 8:13 ~ When God speaks of a "new" covenant, it means he has made the first one obsolete. It is now out of date and will soon disappear.
You refered to Matthew 12:32 in support of your claim.
Anyone who speaks a word against the Son of Man will be forgiven, but anyone who speaks against the Holy Spirit will not be forgiven,
either in this age or in the age to come.
How does one speak out against the Holy Spirit under the Old Covenant Temple construct?
This Age Jesus speaks of is the Age that his Holy Spirit ministry under the New Covenant Temple Construct is ushering in within that generation after his ascension and post Pentecost.
This Age has no theological bearing on the Old Covenant Temple, but is directly associated with the Holy Spirit Temple.
This Age is the Holy Spirit Temple for the unforgivable sin is against this New Covenant Holy Spirit Temple construct.
This Age is the New Testament Temple built on Christ's ministry and his body as the cornerstone of the newly built Holy Spirit Temple. Jesus said destroy this Temple and I will rebuild it in 3 days. This Temple and this Age as far as Jesus is concerned is the Holy Spirit Temple Age for the whole statement of Jesus is centred around the unforgivable sin against the Holy Spirit Temple which has nothing to do with the Old Covenant Temple.
Jesus is not making a claim of the newly built Holy Spirit Temple transition in 70AD after an insignificant carnal fleshly war that was finally being poured out upon the desolate, who were already desolate and without a spiritual Godly temple way back from Christ's ascension and post Pentecost.
The Age to come logically follows the antecedent this Age in context to the newly built temple. The Age to come is what is promised in this temporal Age through the Holy Spirit Seal guareenteing what is to come in the afterlife after our earthly house is dissolved.
This Seal was given in earnest in this Age for the purpose of the eternal Age to come in the afterlife when we as Testators bear our crosses to the grave in order to receive our eternal inheritance at Christ's appearing at the Final Judgement when he will judge the living and the dead.
This eternal inheritance according to Hebrews 9:15-17,27 can only be received after the Testator biologically dies for all men are destined to die once then judgement.
Paul also after he was to be put to death was looking forward to receiving his crown of life at Christ's Appearing. (2 Timothy 4:6-8)
Jesus said be faithful even onto biologicaly death and I will give you a Crown of Life.
The Age to come is receiving what the Holy Spirit Seal guateentees as the promise to eternal life only after a witness carries their cross onto their grave.
Full Preterism is in apt of any covenantal understanding and it uses the haphazard and disjointed methodology like the Flat Earthers. FP takes isolated versus out of context with no recourse from the person saying those things actually means within exegetical reasoning and boundaries.
It is obvious that Jesus refering to this Age and the Age to come was refering to the newly built Temple post Pentecost as he sent his disciples in twos breathing on them the Holy Spirit as ushering in this Age right there and then and the implications of a transition is only applicable for the recipients of the New Temple notwithstanding the old temple which for 40 years is absent of the Holy Spirit and this goes back to the statement by Jesus that the unforgivable sin is against the Temple of this Age that is present of the Holy Spirit, whereas the old temple is already a desolate temple without the Holy Spirit and so there is no applied meaningful appeal to this Age being the desolate temple as no one within that temple construct can committ the unforgivable sin because the Holy Spirit is absent and so you have 40 years of the only Holy Spirit Temple Age leading to 70AD war.
Why would a carnal war be ever referred by Jesus in separating this Age from the Age to come?
Does God use the war of 68-75AD to make the transition between this Age and the Age to come?
What Seal of Guateentee is a carnal war that promises the Age to come?
It makes absolutely no sense!
I believe that Full Preterism is another gospel that tries to take away the hope and promise of eternal inheritance in the Age to come which is vested in the Holy Spirit Seal of Guateentee and not some carnal 7 year war that murdered people.
Either the 68-75AD war is the seal of Guateentee, guareenteing
the Age to come or it is the Holy Spirit within
this Age Temple construct?
Full Preterism is placing the hope and promise in the transition of recieving eternal inheritance on a carnal war whilst denying the hope and promise in the Holy Spirit and this is where I can pick out the two gospels in contention with one another, that is the gospel of Jesus Christ and the FP anti thesis gospel.