Okay so everyone knows what the unforgivable sin is and was in Jesus`s day. Many people say the unforgivable sin cannot be commited today because Jesus isn't walking on the Earth anymore. But I don't know. If the unforgivable sin could be commited today could a believer commit it?
Like as salvific faith is that out of a convicted, poor and contrite heart, (Psalms 47:9; 34:18) so committing the unforgivable sin is not simply on what is said, but the kind of heart that it came out of.
In context. the Pharisees had seen compelling evidence that this Jesus was from God, which, as with John the baptist, (Mark 11:32) common folk realized. Thus the Holy Spirit was convicting them as leadership that they needed to affirm Jesus as the Christ, but as with having "rejected the counsel of God against themselves, being not baptized" of John, (Luke 7:30) they likewise opposed this conviction and had to find a way to justify it, and the powerful attestation to the Lord's claim, in particular His casting out demons with His word, (Mt. 8:16) which is the context (Matthew 12:22) for the reaction, "when the Pharisees heard it, they said, This fellow doth not cast out devils, but by Beelzebub the prince of the devils." (Matthew 12:24)
By ascribing the Lord's works to the devil those who sat in the seat of Moses could justify their hard-hearted refusal of what the Spirit was strongly convicting them to do. Thus this blasphemy by those who above all people should have known better, was compelled by and a fruit of resisting the Holy Spirit, the one by whom Christ cast out demons and the Spirit that was convicting them of their need to repent and believe. In a ward, the evidence for faith and conviction by the Spirit was so compelling and their hardness of heart so adamant that it compelled a blasphemous, disqualifying charge against the Spirit in order to justify their terminal rejection of Christ whom the Spirit of God attested to.
Likewise one can terminally resist the Holy Spirit convicting them of what they need to do in the light of compelling evidence by falsely ascribing the source of these evidences and conviction to the devil. to which Hebrews 6:4-8l 10:26-39 speaks, this likely being the sin unto death, (1 John 5:16,17) the great transgression," (Ps. 19:13) "wickedly departing" from God. (2 Samuel 22:22)
Say they have a mental illness and part of their mental illness is that they say really bad things about the holy spirit and Jesus could they be forgiven? I'm asking because I am the person with the mental illness and part of dealing with my illness everyday is dealing with thoughts that the holy spirit could be Satan
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The Pharisees recourse to ascribing the Divine attestation of Christ in order to justify their hardhearted impenitent rejection of him was not due to mental illness, or because they were struggling with a wrong view of God, or a rebellion toward Him, neither of which they wished they wanted, which seems to be your case. And which struggle i am too familiar with myself.
I mean Jesus says in John 6:37-6:40 that he will not lose a single believer so my salvation should be as secure as any other believers but I still cannot stop these thoughts from coming into my head no matter how many meds I take.
I think sometimes meds can facilitate them. Meanwhile, what the Lord said was that He would not reject any who come to Him, and that
And this is the Father's will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day. And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day. (John 6:39-40)
Thus is actually the strongest verse for OSAS, the version which holds that it only a faith that effects perseverance in obedience is salvific. Yet while the Lord promised that He would not reject any who come to Him from the Father, He did not actually promise that all that the Father gave Him would not be lost, but that this was the Father's will,
"Who will have all men to be saved, and to come unto the knowledge of the truth" (1 Timothy 2:4) "who is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance." (2 Peter 3:9)
Yet not all (and it is not valid to read "all the elect" into such verses) come unto the knowledge of the truth, to repentance in faith, including Judas:
While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled. (John 17:12)
And man can resist God's will:
O Jerusalem, Jerusalem, which killest the prophets, and stonest them that are sent unto thee; how often would I have gathered thy children together, as a hen doth gather her brood under her wings, and ye would not! (Luke 13:34)
Turn you at my reproof: behold, I will pour out my spirit unto you, I will make known my words unto you. Because I have called, and ye refused; I have stretched out my hand, and no man regarded; But ye have set at nought all my counsel, and would none of my reproof: (Proverbs 1:23-25)
So is it possible for a believer to commit the unforgivable sin?
You have not, but i believe the Scriptures teach that of a sin unto death, of terminal apostasy, warning believers as believers against having an evil heart of unbelief in departing from the living God, drawing back unto perdition, back into bondage, making Christ of no effect, to no profit, falling from grace, etc., (Hebrews 3:12; Hebrews 10:38,39; Galatians 5:1-5) thus forfeiting what faith appropriated.
Stand fast therefore in the liberty wherewith Christ hath made us free, and be not entangled again with the yoke of bondage. Behold, I Paul say unto you, that if ye be circumcised, Christ shall profit you nothing. For I testify again to every man that is circumcised, that he is a debtor to do the whole law. Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace. (Galatians 5:1-4)
Having damnation, because they have cast off their first faith. (1 Timothy 5:12)
Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God. (Hebrews 3:12)
Cast not away therefore your confidence, which hath great recompence of reward. For ye have need of patience, that, after ye have done the will of God, ye might receive the promise. For yet a little while, and he that shall come will come, and will not tarry. Now the just shall live by faith: but if any man draw back, my soul shall have no pleasure in him. But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul. (Hebrews 10:35-39)
Thus God works to chastens wayward members to repentance, unto "Godly sorrow" which "worketh repentance unto salvation" (2 Corinthians 7:10) lest they be condemned with the world.
But when we are judged, we are chastened of the Lord, that we should not be condemned with the world. (1 Corinthians 11:32) Thus otherwise they would be condemned due to their declension if not brought to repentance.
I would like to be able to say that "departing from the living God," drawing "back unto perdition," back into bondage, making Christ of "no effect," to "no profit," falling "from grace", etc., means something less than forfeiting what faith appropriated, but I do not see the texts teaching this. Here i stand. I should do no less.
I want Jesus to cure me so that I will never blasphemy him or any part of God anymore but he wont. Its almost as if Jesus hates me and doesn't understand how bad this is making me feel.
And which frustration and wrong view of Christ likely is the cause with these offensive thoughts, which do what their origin in Hell, and which is what Job's wife told him to do.
If not why? If yes we would eventually get the punishment we deserve for saying such things. But why would Jesus give us the holy spirit in the first place?
If you had committed the unforgivable sin as contextually understood then you would not be crying out for help to God and man. If Judas could and would have done so then he could have found salvation. But we must not presume upon grace, and to much is given, to him shall much be required.
And why would Jesus say he would not lose a single believer if believers could be lost? Wouldn't that make Jesus a liar? And wouldn't that mean that saying a believer could lose his salvation call Jesus a liar from his numerous statements in the bible that say that a believer cannot lose their salvation? I mean...
Covered above. As the premise is false so is the conclusion. But which does not mean that God does not play for keeps, and works to bring us to repentance, and somewhere along the line God gives space to repent. (Revelation 2:20-23) But
"he, that being often reproved hardeneth his neck, shall suddenly be destroyed, and that without remedy." (Proverbs 29:1)
I'm just as saved as any other believer right?
We all saved by faith, faith out of a poor and contrite heart, (Ps. 34:18) which faith purifies the heart in the washing of regeneration (Acts 15:8,9; Titus 3:5) and appropriates, is counted for righteousness, (Rm. 4:5) which faith is a living effectual attitude of the heart, which effects obedience to the Object of faith, relative to the light and grace given, which obedience includes penitent confession when convicted of not being obedient.
Conversely, one who characteristically, impenitently lives contrary to the known will of Christ is effectively denying the faith.
But what you need to do is trust the Lord Jesus for salvation and surrender yourself to be used by Him despite your unwanted thoughts. You may be partly responsible for them, but if you are penitent by nature about them then i believe the Lord wants you to overcome evil with God.
Sing some
classic hymns, or listen to them, and read some NT epistles, and confess sins in faith in the Lord Jesus to save, and rejoice that by faith you are accepted in the Beloved on Christ''s account, and seated with Him in Heaven, etc.
Then pray to be holy and used of God, asking Him to bring you to the people - or them to you - whom He would have you to minister to, and pray for the grace to do so. Then expect and look for Him to do so, and do it unto Him, cultivating a servant's heart, so that at the end of the day you can present your labor to the Lord as a gift for His pleasure.
I believe that as you see yourself accepted and beloved in Christ, "bought with a price," no less than the sinless shed blood of the Divine Son of God (what worth!), and yet who wants to live thru you, expressing Him to the world (what a purpose!) and believe He can be pleased as you thus seek first His kingdom and righteousness, then your evil thoughts will be more and more replaced with praise to God.
I am a work (in need of) in processing myself, and have found this to be of help, insofar as i am consistent with it. I also believe supernatural deliverance can be realized from these and other grievous thoughts, but i am not there yet.
) that when we are "changed" at his coming, that we will lose the ability to sin. The writing of the Law on the mind and heart "I believe" is metaphoric and the reality is even stronger. That the reality is that the Law becomes part of our DNA and our ability to sin will cease. 
