Seal up the vision and prophecy (Isaiah 29)

Isaiah chapter 29 is a prophecy about Jerusalem, which for unknown reasons, Isaiah calls "Ariel" in this chapter. (Ariel means "lion of God" in Hebrew.) Isaiah says that Jerusalem will be besieged, and eventually destroyed, but also that those who destroy it will soon pass away.

There's talk in verses 11 and 12 of a mysterious book (probably a scroll, actually) that is sealed and has a vision written within it. The true nature of this book is not clear, but the SAB says that Joseph Smith used this prophecy as a proof text for the book of Mormon. It does sound a bit like Smith's story about the book of Mormon, which to my understanding is that he was given gold plates etched with Egyptian writing by the angel Moroni who also gave him the supernatural ability to translate them, despite not knowing Egyptian. Actually, although I haven't heard of such a thing, it wouldn't surprise me if some Muslims use this prophecy as a proof text for the Qur'an, as supposedly the Prophet Mohammed (pbuh) wrote the Qur'an with the help of an angel despite being completely illiterate! It's also likely that some Christians use this as proof text for the New Testament. Anyway, whatever book this prophesies, I believe it's the basis for what is talked about in verse 14, which the SAB calls absurd. It's not about destroying wisdom and understanding per se, but I think is really of the same nature as when a major scientific breakthrough happens, and large portions of scientific understanding have to be revised. Whatever is in this sealed vision is going to turn religious understanding upside down! All of the candidates for fulfillment of this prophecy that I mentioned above certainly did for a portion of the population. I think this is taken further in verse 16, where Isaiah is asking whether created beings have a right to question the creator. (Although of course, we should question, because the New Testament, the Qur'an, and the book of Mormon can't all be true; and I didn't even mention the writings of the Báb and Bahá’u’lláh!) The rest of the chapter talks about how this book will bring sight to the blind and hearing to the deaf, as well as blessings to the meek and the poor, while bringing down evil people.