Isaiah 29:11

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:

And the vision of all - of all the prophets. Vision (chazuth) is the same here as revelation or law. In Isaiah 28:15 the same Hebrew word is translated covenant. Translate (as the article in hakol (H3605) stands for a suffix), 'the law, the whole of it' (Maurer). I prefer the English version. The true prophets, in the plural ("of all"), stand in contrast to the blinded "prophets" of the people (Isaiah 29:10).

Is become unto you as the words of a book that is sealed - (Isaiah 8:16.) God seals up the truth so as that even the learned, because they want believing docility, cannot discern it (Matthew 13:10; Matthew 11:25). Prophecy remained comparatively a sealed volume (Daniel 12:4; Daniel 12:9) until Jesus, who "alone is worthy," "opened the seals" (Revelation 5:1; Revelation 5:9; Revelation 6:1).