Extraneous, I am not totally sure which text in John 14 you are referring to. I think it is John 14:25-26. First, let me quote it.
"These things have I spoken unto you, while yet abiding with you. But the Comforter, even the Holy Spirit, whom the Father will send in my name, he shall teach you all things, and bring to your remembrance all that I said unto you"
I would apply this directly to the apostles. I bolded certain things in the text which we might be reading differently. The pronoun "you" refers to the apostles who were the witnesses of the words and deed of Christ. The concept of "bring to rememberance" is referring to the apostles remembering the spoken word of Christ.
Also, these verses are in the context of the statement by Judas (not Iscariot) in verse 22. The question of Judas is asking how Christ will disclose himself to the apostles and not to the world. Christ's means of disclosing himself to the apostles is to have the Holy Spirit cause the apostles to remember the words that Jesus spoke during his earthly ministry.
Also, if I can add, this is definitional to what the apostolic office involved. If you go forward to Acts 1:22 you can see that one of the criteria to choose Matthias as the 12th apostle was for him to be a witness to the earthly ministry of Jesus.
"beginning from the baptism of John, unto the day that he was received up from us, of these must one become a witness with us of his resurrection"
If I can add some thoughts from another text... John 17, the High priestly prayer of our Lord.
He prays for the apostles.
Verse 8 reads... "for the words which thou gavest me I have given unto them."
Christ is the word in John 1 (logos). In the process of his earthly ministry, Christ gives to the future apostles the words the Father gave to Christ. In the context you can see that he is referring to the 12 in verse 12. "and not one of them perished, but the son of perdition;" This of course refers to Judas Iscariot, who fell.
We, the Church, do not receive the word of God until verse 20. "Neither for these only do I pray, but for them also that believe on me through their word" Christ is the word in John 1, he trains the future apostles and gives them the word in his earthly ministry (Acts 1) and then he sends the Holy Spirit to cause the apostles to remember the word (John 14), and then the word is given to the Church (John 17). Of course that word was given orally before the close of the cannon, but now the word of God is the Bible. The bible is the written record of the memories of the apostles as the Holy Spirit cause the apostles to remember the words of Christ. None apostolic writers like Luke are still Biblical, not because the Spirit causes Luke to remember the word of God given to Christ, but Luke writes because he could consult the original eyewitnesses, the apostles who had the inspired memories of Christ's words. Notice what Luke says in Luke 1:2. "even as they delivered them unto us, who from the beginning were eyewitnesses and ministers of the word." In this text, the apostles "delivered" what Luke is writing unto "us" (this is the Church).
The bottom line is that I would see the phrase in John 14:26, "he shall teach you all things, and bring to your remembrance all that I said unto you" as a part of ministry of the Holy Spirit to cause the apostles to receieve the apostolic logos and hand it down int he written word of God and oral apostolic testimony.
It is obvious that my understanding leads strait to concepts like the close of the cannon and sola scriptura. There are no more apostles who hear the words of Christ while he was on earth. NT special revelation ceased with the death of the last apostle.