Here is the Church's official interpretation on this passage (Matthew chapter 12):

[31] "The blasphemy of the Spirit": The sin here spoken of is that blasphemy, by which the Pharisees attributed the miracles of Christ, wrought by the Spirit of God, to Beelzebub the prince of devils. Now this kind of sin is usually accompanied with so much obstinacy, and such wilful opposing the Spirit of God, and the known truth, that men who are guilty of it, are seldom or never converted: and therefore are never forgiven, because they will not repent. Otherwise there is no sin, which God cannot or will not forgive to such as sincerely repent, and have recourse to the keys of the church.


Matthew

The last action being a mortal sin...
That seems ata first blush to go against not killing. Am I on the right track here?

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Quote from: 1st Mansion Tenant on Yesterday at 07:24:00 PM
I was taught that ѕυιcιdє is an unforgivable sin because it makes the last action a mortal sin, and those with even one unconfessed mortal sin go to Hell. Since the person who commits ѕυιcιdє is unable to go to confession and receive absolution, ѕυιcιdє is a straight ticket to Hell. I have never heard of ѕυιcιdє being an unforgivable sin.

Rather it is a grave mortal sin that will send one to Hell. Say in the case of a person suiciding and the effect being fatal but not immediate, one could repent the action and sincerely ask God for forgiveness and He would grant it. Nobody would ever know the outcome for that person, and it still important to pray for his soul. But it certainly would be slim chance of grace at the last moment, maybe as a result of someone else's constant prayer, and definitely not to be banked on.
Nevertheless ѕυιcιdє is not the unforgivable sin.

While it is true we may pray for the soul of that person, we do not know with any certainty at all that "God would grant it" because whatever regret there may (or may not) have been on the part of the dead person, a mortal sin was committed but not confessed and absolved - there was no time for that - which is the only way we can say with any degree of certainty at all that "He would grant it".

The unforgivable sin(s) is one such as adultery, (or any mortal sin really) where there is no forgiveness while one lives in the sin.

In the case of ѕυιcιdє, the mortal sin is committed only an instant before death, or unconsciousness then death. In each case, there was no time to repent, let alone confess to a priest.

If the person jumps from an airplane without a parachute to kill themself, a mortal sin has been committed the instant they jump from the plane. Death occurs say one minute later when they hit the ground - assuming they didn't die of a heart attach on the way down. Regardless of what's going through the mind of the person and no matter how you look at it, a mortal sin has been committed, then they die. Assuming the person was sane, the assumption is always that the person died in mortal sin. The hope is that "somehow" he repented and God forgave him before he crossed into eternity. There is possibly a glimmer, but not much hope for that soul.
 

Rather it is a grave mortal sin that will send one to Hell. Say in the case of a person suiciding and the effect being fatal but not immediate, one could repent the action and sincerely ask God for forgiveness and He would grant it. Nobody would ever know the outcome for that person, and it still important to pray for his soul. But it certainly would be slim chance of grace at the last moment, maybe as a result of someone else's constant prayer, and definitely not to be banked on.
Nevertheless ѕυιcιdє is not the unforgivable sin.
While it is true we may pray for the soul of that person, we do not know with any certainty at all that "God would grant it" because whatever regret there may (or may not) have been on the part of the dead person, a mortal sin was committed but not confessed and absolved - there was no time for that - which is the only way we can say with any degree of certainty at all that "He would grant it".

The unforgivable sin(s) is one such as adultery, (or any mortal sin really) where there is no forgiveness while one lives in the sin.

In the case of ѕυιcιdє, the mortal sin is committed only an instant before death, or unconsciousness then death. In each case, there was no time to repent, let alone confess to a priest.

If the person jumps from an airplane without a parachute to kill themself, a mortal sin has been committed the instant they jump from the plane. Death occurs say one minute later when they hit the ground - assuming they didn't die of a heart attach on the way down. Regardless of what's going through the mind of the person and no matter how you look at it, a mortal sin has been committed, then they die. Assuming the person was sane, the assumption is always that the person died in mortal sin. The hope is that "somehow" he repented and God forgave him before he crossed into eternity. There is possibly a glimmer, but not much hope for that soul.
 

You're right, it's both unlikely that they regretted(or even had time to regret) their actions and it is also uncertain if God would absolve them due to their regret, that'd vary from case to case I'd imagine. But if it's still a possibility, however unbelievably slim, we can still pray for them. I don't think the Church has ever declared definitively that someone was damned(although those who committed ѕυιcιdє are usually buried in unconsecrated ground, that still doesn't declare that they were DEFINITELY damned). 

That was me and I pressed post before I was ready to post. Clicked the wrong button. 

The unforgivable sin(s) is one such as adultery, (or any mortal sin really) where there is no forgiveness while one lives in the sin.

You are mistaken. Neither is divorce the unforgivable sin. You are confusing unforgivable with mortal. These words have two different meanings. 

Also anon changed my word repent to regret. These also have different meanings. Be careful not to confuse people who are trying to learn.

Stubborn, I didn't miss it.

But again you are confusing terms. You are talking about unforgiven sins but the topic is THE Unforgivable sin. 

Jesus Himself tells us in Chapter12 of Matthew's Gospel which addresses the 
Intransigence of those whited sepulchres, the Pharisees:

[31] Therefore I say to you: Every sin and blasphemy shall be forgiven men, but the blasphemy of the Spirit shall not be forgiven. [32] And whosoever shall speak a word against the Son of man, it shall be forgiven him: but he that shall speak against the Holy Ghost, it shall not be forgiven him, neither in this world, nor in the world to come. [33] Either make the tree good and its fruit good: or make the tree evil, and its fruit evil. For by the fruit the tree is known. [34] O generation of vipers, how can you speak good things, whereas you are evil? for out of the abundance of the heart the mouth speaketh. [35]A good man out of a good treasure bringeth forth good things: and an evil man out of an evil treasure bringeth forth evil things.

So we see there is only one unforgivable sin (THE sin). These Pharisees, in this chapter alone, were constantly watching out for ways to trip Him up and trap Him in order to kill him, in they finally succeeded, as we know. They could have repented at any time but they chose final impenitence.

I repeat that it would be a very slim chance that a person could survive a ѕυιcιdє just long enough to repent, (but nevertheless possible) and it would be presumptious to bank on it. Presumption on God's mercy would be a sin in itself to compound the mortal sin of ѕυιcιdє.

Stubborn, 1st Mansion was not off-topic. She was responding to Cruiser's post wherein he questioned if ѕυιcιdє could be the unforgivable sin.

Of course we are talking of a hypothetical situation. What other way can we speak? It is impossible to know what in the mind of a person who does not die immediately in a ѕυιcιdє but is still able to form thoughts.

And you say that there is a remote possibility of God forgiving such a person, though we cannot know that. I did not mention or imply a teaching of the Church, but I do know that They are meant for our own salvation and God is not bound by them.

My point is that you spoke of divorce and other sins as being unforgivable, and I can only assume that you meant to say "unforgiven". All sins can be forgiven except etc.......