--I will just use your message to respond so it's simpler for me. And I appreciate you being less hateful than most are when replying to that particular theory.
"First of all, I very much agree with a lot of what you said in the entirety of your post..
In relation to this specific part of your post, although we should definitely be fearful where sinning willfully is concerned after having been reconciled back unto God through Christ, I do believe that, in the context of the entire epistle of Hebrews, and in the context of the entirety of the Bible, the writer here was not talking about a single incident of offense or sin after receiving Christ.
For example, this same writer admonished his hearers to not despise the chastening of the Lord elsewhere in this epistle, and God would not be chastening or scourging his sons if they were walking in sinless perfection, but instead if they were erring at times."
--HE chastens us even when we don't sin to show us the truth and depth of our own commitment as well as for sins which we do not willingly commit because we didn't know they were sins, ie, if we not commit a sin leading unto death. There is a question, what is a sin leading unto death? Could it be any of the capitol sins from the Commandments, or could it only be the spiritually lethal sin of disrespecting THE SPIRIT or could it just be a sin that was willful and therefore spiritually lethal. We don't know because the Bible left some things intentionally vague so that they would wither require extreme contextual understanding of the most elusive Scriptural mysteries or so that understanding them would simply not be possible without Guidance directly from GOD.
"When one is truly saved or born again, they are likened to a child in a spiritual sense. Children go through stages of growth, and I believe that the Bible allows for the same. What is important is that we are truly seeking to ever grow in our faith, and those who are truly of God's five-fold ministry, as most people call it, will encourage or admonish us to do just that."
--A well meaning child makes mistakes as course of learning, but intentional rebellion is another thing. Imagine if Mary Magdalane had gone straight out and fornicated with another man right after CHRIST had instructed her to "sin no more", do you really think HE would have considered that the act of a child that was just learning or an ungrateful and disrespectful criminal who counted the forgiveness that just not only saved her from stoning but from drowning in violent burning darkness forever. People tend to be so caught up in rationalizing how they can still be saved they forget just how serious this all is and also just general rational comprehension of the contextual text.
"Ephesians 4:8-16
"Wherefore he saith, When he ascended up on high, he led captivity captive, and gave gifts unto men. (Now that he ascended, what is it but that he also descended first into the lower parts of the earth? He that descended is the same also that ascended up far above all heavens, that he might fill all things) And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers; For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ: Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ: That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive; But speaking the truth in love, may grow up into him in all things, which is the head, even Christ: From whom the whole body fitly joined together and compacted by that which every joint supplieth, according to the effectual working in the measure of every part, maketh increase of the body unto the edifying of itself in love.""
--That passage is still describing children who are learning about the wiles of the devil to avoid them, not to just go indulge a while then come back wiping their mouth and saying "oh that sure was tasty, now forgive me so I can avoid punishment for it" Which is so disrespectful it's amazing people can't see it.
"True apostles, prophets, evangelists, pastors, and teachers are given by Christ for the perfecting of the saints or to bring us to full spiritual maturity as perfect men who have attained to the measure of the stature of the fulness of Christ. Of course, like I said before, seeing how we all start out as children, spiritually speaking, after having received the new birth, there is inevitably going to be a growing process, and we are going to stumble at times along the way. However, we must never take such times of stumbling lightly, but we must quickly repent and continue moving forward in our quests to be more and more like Christ."
--Stumbling is a far cry from willful returning to wallow in the mire. Examine yourself, can't you see that you yourself are just grasping at unlikely straws to tell yourself that willful sin can be forgiven, even though it really doesn't seem to say that anywhere in the Bible?
"Everything that you described in your post, in my estimation, falls under the category of the lack of the fear of God. Christians should fear God (cue the scripture-twisters who will insist otherwise), and it is through the fear of God that we should ever be growing in sanctification or separation unto our God."
--I would hypothesize that the constant aggressive and generally irrational drive to preach that willful sin can be forgiven or as a normal part of the sanctification process lacks fear of THE LORD, as it often flies directly against the given message and also just the general reality of the thing. If someone treated you the way we are presumably allowed to treat GOD how tolerable would it really be? And we are sinful wretches who should forgive nearly anything, but HE IS perfect and paid a horror of pain for us in ways and depths we can't imagine to give us one dear and precious chance, but do we not count it indeed common or cheap to think we can get that precious thing over and over again just because we feel like indulging in the shallow filthy pleasure of sin? Believe me, I have seen a tiny glimpse of hell and I dearly do not want to be damned, and I still hold out a tiny shred of hope that there really is a way, but I'm not just going to do what most do and stretch the Scriptures past credulity to tell myself what I want to hear. If it's really true i want solid doctrinal proof. I think lying to oneself will make the shock pain of damnation just that much worse.
"2 Corinthians 6:14-7:1
"Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people. Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you, And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty. Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.""
--Again that passage seems to correspond to my theory more than the theory that willful sin can be forgiven, though I know that last bit could be stretched to seem as if it were a long ongoing process that 'could' 'maybe' include willful sin, though that really doesn't seem to make much contextual sense at all. Believe me I know, I don't want to believe it either, but I will need a MUCH better argument than any I have yet seen to feel truly sure that such is the case.
Anyway I appreciate your attempt, which though I see it as having little to no presented true doctrinal justification for the position that willful sin can be forgiven, it is still a little more reasonable than most theories I have seen and as I say, you didn't try to tear me down for my lack of false modesty. I wish you the best and I dearly hope that somehow in truth we willful sinners really can and will be forgiven, and as I said in my first response we must all keep trying with all our hearts either way.