Good. But, how could you exclude the Church, since Jesus clearly and explicitly founded a Church (Matthew 16:18) after writing exactly zero scripture. He declared that “He who hears you hears me” (Luke 10:16) and declared the Church to be the final authority in all matters (Matthew 18:15-17). Paul clearly believed this, as he made the arduous journey in Acts 15 to ask the Church’s determination on the circumcision question. Again, Jesus wrote no scripture and scripture did not help Paul. Jesus founded a Church and the Church helped Paul.
That is not at all what I proposed. However, to a bible believer, point 4 answers point 3 and makes the rest moot. You viewpoint, being absolutely dependent upon bible alone, has made a linear argument circular. Christ founded a Church, > giving it all authority, binding and loosing, even over sin. > The members of the Church, both eyewitnesses and others, wrote scripture under the guidance of the Holy Spirit. > The continuing authority of the Church tested those scriptures hundreds of years later and handed them on > to you and I. This is a straight line, not a circle.
Public revelation? NO! But scripture needs authoritative interpretation in each generation, being lead by the Holy Spirit. The lack of an authoritative Church is why much of Christianity is so severely fractured and continues to fracture. I pray for the return of the prodigal sons.