1) Jesus' appeals to Scripture were made by way of convincing Torah-studying Jews of who He is, and in His earthly ministry He used "Scripture" (as did the Apostles) to refer only to the Old Covenant Scriptures. In contrast He said "I am the Way, the Truth and the Life. No man comes to the Father except through Me." The Christian Faith if based on a Person, not on a book.
2) and 3) You argue as if the word "all" meant "only". It does not, nor does the Greek πᾶσα have the double sense of "all" and "only" -- it is correctly translated as "all". Thus your answer is no answer at all, even leaving aside that it is the Holy Apostle Paul writing to Timothy not Our Lord Himself, and FatherofFive asked about Jesus.
4) Again a non-answer. I agree that the Holy Spirit led the Church to correctly select the canon of Scripture, but you deny the process by which the Holy Spirit did this: a series of councils held by the ancient Church, one at Carthage, that because it took place in the Patriarchate of Rome and received a papal assent, the Latins regard as having settled the matter, and the disciplinary session of the Sixth Ecumenical Council (called in the west the Trullan Synod or the Quinsext Council) which accepted the canons of Carthage, including the enumeration of the books of Scriptures, as binding on the whole Church. The same authority which fixed the canon of Scripture -- an Ecumenical Council of the ancient and undivided Church -- also approved the veneration of icons and of relics.
Rather than projecting your modern anti-Papist biases back into the first century, why don't you read the writings of the Ante-Nicene Fathers who knew the Apostles to see what the ancient Church was like even before it collected the canon of Scripture, when the Faith was transmitted by personal preaching: the letters of St. Ignatius (the seven genuine ones), the Didache, the (First) Epistle of St. Clement to the Corinthians, and the Martyrdom of Polycarp taken together give a nice picture of the Christian Faith and the life of the Church in the first generation after the Apostles. The promise that the Spirit would lead us into all truth applied as much to the Christians living in those days as it does to us.
Did Jesus promise the apostles that the Holy Spirit would guide them in what to write or not? If He did isn’t it the Holy Spirit who’s words are recorded rather than Paul’s?
>> also approved the veneration of icons and of relics.<<
That group also protected pedophiles.