Literary: Verse 26 is virtually identical to Isa. 29:14:
14 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.
The context continues to be different, of course, with the modern referent being most immediately the “wise man” who couldn’t read the sealed book, but it becomes inclusively the modern apostate gentile nation, whose wisdom in their own eyes will be confounded by the evidence of the righteous words of Nephi’s people.