Isaiah 29:10-12
10
For Yahweh has poured out on you a spirit of deep sleep, and has closed your eyes, the prophets; and he has covered your heads, the seers.
11
All vision has become to you like the words of a book that is sealed, which men deliver to one who is educated, saying, "Read this, please;" and he says, "I can't, for it is sealed:"
12
and the book is delivered to one who is not educated, saying, "Read this, please;" and he says, "I can't read."