Actaully, I don't. I asked pricilla and you (still haven't gotten back a reply) on how you know your interpretation is correct. Totally, different topic.
We were discussing before you interupted. Your interruption is not the topic. The subject of this theme is not your topic - you are the one who has changed the topic.
I have answered your question many times over. Isaiah 8:14-18 is a Messanic prophecy. Portions of this text that surround verse 16 are quoted several times in the New Testament. Verses 16-18 have a Messanic application with the apostles as verse 18 is specifically quoted in Hebews 2:12 and referred to in Hebrews 2:3-4 as the "signs" Isaiah 8:18 refers to. The disciples in verse 16 are the same disciples in verse 18. The same Messiah in verses 14-15 is the same personage in verse 16.
Therefore in its MESSANIC context as it is applied to the Messiah five times in the New Testament it refers to "the testimony" that the Apostles were qualified to give, commanded to give and ultimately in writing did give as the last living apostles refers to the last apostolic writing as "the testimony" (Rev. 1:3) and explicitly "seals" all apostolic writings with Revelation 22:18-19.
The book of Revelation intentionally is designed to COMPLETE what was begun in the book of Genesis. This design is so evident and so clear and can be demonstrated so completely that you must intentionally close your mind to the obvious. If you need to see the evidence with your own eyes, I will be glad to type out the designed parallel contrasts between Genesis and Revelation as Revelation is so clearly designed to be the LAST scripture to READ just as Genesis is designed to be the FIRST scripture to READ with everything else fits in between. There cannot be any better fit for concluding the Biblical canon than the book of Revelation.
Isaiah 8:19-20 is the climax of binding and sealing "the law" and "the testimony" as both are referred as "this Word" in verse 20 as the final authority to examine and determine the truth of all men by.
John 14-16 is partly designed with Isaiah 8:16-20 in mind with regard to the office of Apostle with the Holy Spirit leading them into ALL TRUTH within the first century before the cessation of the last living apostle as this is made clear in John 17 where Jesus states that future generations of believers, or those who shall believe and come to heaven will come through THEIR WORD:
20 ¶
Neither pray I for these alone, but for them also which shall believe on me through their word;
Peter realized that the writings of Paul were inspired (2 Pet. 3:15-17) as did Paul himself (2 Thes. 2:13). They realized they were providing the New Testament Scriptures or "the testimony" of Christ in written form to the churches and to all future generations who would believe "through their word."
However, the spiritual blind man will simply scoff at all of this and must in order to have no final authority for his beliefs and practices but himself, or some institution (Mormons, Catholics, Pentecostals) who need continuing revelation in order to justify their heresies and departures from the scriptures.