If as you say that “Each individual has given over authority to the Spirit in different proportions”, how then do we tell which group has correctly adhered to the scripture? I suppose the answer is something like “compare what they say with scripture,” at which point we repeat our points that it is an inadequate method.
Not if you believe that you are lead by the Spirit into all Truth. In short, it is working out your own salvation with fear and trembling, and realizing that one day we all have to stand before God and give an account. In that day, if I’ve believed or practiced something wrong, that responsibility falls on me. I can’t point to another believer, whether pastor or pope, and try to shrug off responsibility. It is that idea that fuels many protestants’ (and Catholics’) drive for bible study.
What sola scriptura essentially does is deny the simple proclamation, that Jesus is God who came incarnate for us to die for sins can ever be as authorative as the words of scripture.
You’ve lost me on this one, sorry if I’m not understanding.

A sola scriptura advocate doesn’t believe that someone has to have a Bible in their hand and read it cover to cover in order to repent. We also believe the gospel was indeed proclaimed orally, and people could indeed respond to that.
So I suppose the question is this, does God use men in a church succession to teach his truth or does he inspire the individual picking up the bible to understand it?
Further the question is does God use men in a church succession to teach infallibly something that is not contained in scripture in full, and what precisely does that “church succession” look like? Popes, Patriarchs, Bishops, Overseers, Elders, Pastors, Teachers, Evangelists, Magisterium, Councils, etc…
You do bring up a legitimate concern about tradition, how come the traditional churches are not united? A conversation way to big to summerize or explain but I will say this, it seems to me we need to make the best choice amongst those three groups based on what we know and perceive to be correct.
But the core of what you present; “we need to make the best choice amongst those three groups based on what we know and perceive to be correct” is at the core of our discussion. Just as you felt lead to the Orthodox Church, I believe the Spirit leads us in life in order that we may be conformed to the image of the Son, each of us. His Spirit testifying to our spirit. Notice John is clear; we need God, hence we need the Son to teach us, the Spirit to guide us. No, I don’t believe the Spirit will ever contradict Himself, but I also believe He is quite capable of putting us exactly where He wants us so that we, you and I both, can be conformed.
Somewhere along the way things have been changed or interpreted and applied in a way that makes unity amongst all of us to be almost impossible, and I do think that is the Devil weaseling his way in. What I mean is the more dogma, the more definitions, the more outside philosophy we let in, the more opportunity to split us up. In short, I feel doctrine is important, and the Truth is critical but we need to make sure that charity is intact and we don’t punish one “weaker in the faith.” I think one of the greatest ways to unity is to see the Body of Christ as it is, and to acknowledge one another as brothers and sisters. Protestants have not been the best in that area. And we need to see room for us to grow in knowledge and in faith.
If we are to take in the sense that we need no man, do we need John to tell us these words? What is the teaching of the Holy spirit? How does the Holy spirit operate? How did the apostles operate? Did they simply preach the word and baptise and leave?
The scriptures do record times of quick teaching and making sure the person understood who Jesus was and what He came to do, followed by baptism. Take the Ethiopian for example. It does tend to bother me that joining a liturgical church has now apparently got to the point of a long period of teaching, and only after that long period is the person allowed to be baptized. It signals, from my POV, that perhaps the teachings we insist on perhaps were not insisted on by the Apostles, nor understood in the way we strive to understand them today.
Now I’m glad you would submit to the apostles, let me raise a historical issue for you. There were many groups in the second century all claiming to have the true teaching of Christ. Some were like Ignatius who stressed the Bishop, some were like Marcion who insisted the God of the Old testament was evil, some were like Iraneaus who maintained the public preaching of the churches and the scripture is the standard to which we must submit, others were hebraists who insisted on following the old law. Using the holy spirit alone, how do we determine which we should belong to? Or do we form our own group? Also don’t address me as a Roman Catholic, I will not defend Rome or its errors.
I apologize, when I’m responding sometimes I forget which church the person I’m responding to belongs too. That’s my fault, and my poor short term memory.

The way we see it is that teaching must align with scripture and if we hear a teaching and turn to scripture and find contradiction, we reject the teaching. So, take the legalistic Judaizers, we have scripture directly teaching against such things, esp. from Paul. We know the error from scripture, and from the guidance of the Spirit who inspired scripture and who guides us.