“There are many other things that Jesus did. If every one of them were written down, I suppose the whole world would not have room for the books that would be written.”
— St. John, The Beloved, from his Gospel, Ch. 21, v.25
Jesus, teaching in the Upper Room about the Holy Spirit said, “But the Advocate, the Holy Spirit, whom the Father will send in my name, will teach you everything, and will cause you to remember everything I said to you.” (John 14:26); and, again, “But when he, the Spirit of truth, comes, he will guide you into all truth. For he will not speak on his own authority, but will speak whatever he hears, and will tell you what is to come. He will glorify me, because he will receive from me what is mine and will tell it to you. Everything that the Father has is mine; that is why I said the Spirit will receive from me what is mine and will tell it to you.” (John 16:13-15)
SINCE, by the personal testimony of one of the Original Twelve, the text of Scripture contains but a fragment of all the words and works of Jesus, is the Holy Spirit, therefore, LIMITED to reminding us ONLY of what got written down?? That’s NOT what Jesus said; that’s ABSURD!! Jesus said the Holy Spirit would guide us “into ALL Truth,” “teach [us] everything,” and “cause [us] to remember EVERYTHING” Jesus said; which necessarily INCLUDES the things he said that aren’t written down. Or are they not part of “all Truth?” ABSOLUTELY they are, and the Holy Spirit will speak to us concerning these things, also.
Again, recall how Jesus admonished the Scribes and teachers of The Law saying, “You study the scriptures thoroughly because you think in them you possess eternal life, and it is these same scriptures that testify about me, but you are not willing to come to me so that you may have life.” (John 5:39-40)
Does the text give life, or is life found only in The One of Whom the text speaks? THEREFORE Jesus is MORE than, GREATER than, SUPERIOR TO, and MASTER of the text.
Even the most casual student of the Bible will soon discover the reality that there is PLENTY that we are not told. Daniel is denied further revelation in Daniel 12; John the Revelator is told NOT to write what The Seven Thunders spoke, we are heading for eternity, and there’s VERY little written about what eternal life will be like beyond the emergence of The New Heavens and The New Earth. And St. Paul affirmed to the church at Corinth, “Eye has not seen, nor has any ear heard, nor has it entered into the mind of man what God has prepared for those who love Him.” (I Cor. 2:9)
And yet, all of these things are known to Jesus; all the things that Scripture DOES NOT say; he knows. The text tantalizes us with the promise that, “Of His Kingdom, and of its increase, there SHALL BE NO END.”
CLEARLY Jesus VASTLY EXCEEDS the bounds of the text, and not only that, but the extent, power, might, and glory of His eternal Kingdom cannot even be encompassed within its pages.
The Bible is from God, for humanity, in this age, that we may know enough to come to Him in repentance, to receive the forgiveness He wrought upon The Cross in The Person of Jesus Christ, and to be baptized into and walk in the fullness thereof. And it will remain a living word forever, in that it speaks the Truth of His Person, and His Works; it’s pages shall never grow old.
But, eight million years from now, all the Redeemed will truly understand that the whole of it was but an intro; a mere Foreword to the vastly greater work that He has designed to bring us into; that it is joy unspeakable, that it is FULL of glory, and that — TRULY, TRULY — in this mortal life, the half HAD NEVER YET been told.
Certainly , the text of Scripture contains but a fragment of all the words and works of Jesus, and also from Adam and Eve onward man only knew but a fragment of all that God did and of His mind, but God always provided what man needed to obey God in what He required (though God can give more grace), and God manifestly made writing His most-reliable means of authoritative preservation. :Now go, write it before them in a table, and note it in a book, that it may be for the time to come for ever and ever." (Isaiah 30:8; cf Exodus 17:14; 34:1,27; Deuteronomy 10:4; 17:18; 27:3,8; 31:24; Joshua 1:8; 2 Chronicles 34:15,18-19, 30-31; Psalm 19:7-11; 102:18; 119; Isaiah 30:8; Jeremiah 30:2; Matthew 4:5-7; 22:29; Luke 24:44,45; John 5:46,47; John 20:31; Acts 17:2,11; 18:28; Revelation 1:1; 20:12, 15;
And thus as abundantly evidenced , as written and established, Scripture became the transcendent supreme standard for obedience and testing and establishing truth claims as the wholly Divinely inspired and assured Word of God. Thus the veracity of even apostolic oral preaching could be subject to testing by Scripture. (Acts 17:11)
Thus in the promise you refer to, what you leave out is what follows:
And many other signs truly did Jesus in the presence of his disciples, which are not written in this book: But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name. (John 20:30-31)
Meaning in principle that what is necessary for man's salvation and spiritual life is written, while apart from private revelation (like as to where to live), and of God illuminating more and more of the latent Truth in Scripture, then based upon the premise that there is far more express Divine revelation to know in this life, it opens a Pandora's box for everything from the Gnostics to cults to Catholicism asserting what is the word of God, based upon the premise of their ensured veracity (in circularity, based upon what they say is the word of God).
While men such as the apostles could speak as wholly inspired of God and also provide new public revelation thereby (in conflation with what had been written), church leadership cannot claim the same. Thus the written word is the assured infallible word of God.
And rather than an infallible magisterium being required to for writings to be established as being from God, a body of authoritative wholly inspired writings had been manifestly established by the time of Christ, as being "Scripture, ("in all the Scriptures") " even the tripartite canon of the Law, the Prophets and The Writings, by which the Lord Jesus established His messiahship and ministry and opened the minds of the disciples to, who did the same . (Luke 24:27.44,45; Acts 17:2; 1828, etc.) Which establishment pf writings of God, as with men of God, was essentially due to their unique enduring heavenly qualities and attestation, while consensus of the faithful church councils are to recognize ratify.
"Jesus said the Holy Spirit would guide us “into ALL Truth,” “teach [us] everything,” and “cause [us] to remember EVERYTHING” Jesus said; which necessarily INCLUDES the things he said that aren’t written down. Or are they not part of “all Truth?” ABSOLUTELY they are, and the Holy Spirit will speak to us concerning these things, also."
But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you. (John 14:26).
The promise of being led into all Truth will only be fully realized in Eternity for those in Christ, bless God, while John 14:26 does not teach that the Spirit would “cause [us] to remember EVERYTHING” Jesus said, for unlike the 12 apostles, how can we remember what we never heard or read? Instead, that promise is first to those who who heard the Lord and pass what His Spirit inspired them to record into writing, and which the the Spirit brings to mind. Nowhere is there a promise to remember what we never heard. But the writing of what the apostles heard and were given has a depth which is never fully mined in this life, let alone needing more.