Isaiah 29:10-11

10For the Lord has poured over you a spirit of deep sleep. He has closed your eyes, [you who are] the prophets; And He has covered your heads, [you who are] the seers.

11The entire vision [of all these things] will be to you like the words of a scroll that is sealed, which they give to one who can read, saying, “Read this, please,” he shall say, “I cannot, for it is sealed.”