But this time, it's not just filler.
Isaiah 29 was selected because it refers to a special book, sealed by God, that the wise and learned cannot understand. Only one very special person will be able to read it.
As Nephi explains:
It shall come to pass that the Lord God shall bring forth unto you the words of a book ... And behold the book shall be sealed.
But the book shall be delivered unto a man ... which are the words of those who have slumbered in the dust.
The book shall be hid from the eyes of the world, that the eyes of none shall behold it save it be that three witnesses shall behold it ... and they shall testify to the truth of the book and the things therein.
And wo be unto him that rejecteth the word of God! 2 Nephi 27:6-14The book, of course, is the Book of Mormon, "a marvelous work and a wonder," and the very special person is Joseph Smith.
It's all there in Isaiah 29, as quoted by Nephi (with a few extra "and it came to passes" and "beholds" thrown in to make it sound even more biblical than the Bible).
But behold, it shall come to pass that the Lord God shall say unto him to whom he shall deliver the book: Take these words which are not sealed and deliver them to another, that he may show them unto the learned, saying: Read this, I pray thee. And the learned shall say: Bring hither the book, and I will read them. 2 Nephi 27:15
And the man shall say: I cannot bring the book, for it is sealed. Then shall the learned say: I cannot read it. 2 Nephi 27:17-18
(And the vision of all is become unto you as the words of a book that is sealed, which men deliver to one that is learned, saying, Read this, I pray thee: and he saith, I cannot; for it is sealed: Isaiah 29:11)
Wherefore it shall come to pass, that the Lord God will deliver again the book and the words thereof to him that is not learned; and the man that is not learned shall say: I am not learned. 2 Nephi 27:19
(And the book is delivered to him that is not learned, saying, Read this, I pray thee: and he saith, I am not learned. Isaiah 29:12)
Therefore, I will proceed to do a marvelous work among this people, yea, a marvelous work and a wonder, for the wisdom of their wise and learned shall perish, and the understanding of their prudent shall be hid. 2 Nephi 27:26
(Therefore, behold, I will proceed to do a marvellous work among this people, even a marvellous work and a wonder: for the wisdom of their wise men shall perish, and the understanding of their prudent men shall be hid. Isaiah 29:14)The book of Mormon prophesies itself -- 2400 years before it was dug up and translated by Joseph Smith.
When it comes to prophesy, you just can't beat the Book of Mormon!