It does not MATTER who wrote those scriptures, that does not mean those reading them LATER would understand them.
There is no connection whatsoever.
I believe that opening up the book refers to the scriptures that had been sealed; thus they could not be fully understood. That is why referring to the time of the end, Daniel said:
many shall run to and fro, and knowledge shall be increased.
the words are closed up and sealed till the time of the end means that unless Jews look at how the scriptures were unsealed and explained, they will not know what they really mean.
Daniel 12
King James Version
4 But thou, O Daniel, shut up the words, and
seal the book, even to the time of the end: many shall run to and fro, and knowledge shall be increased.
8 And I heard, but I understood not: then said I,
O my Lord, what shall be the end of these things?
9 And he said, Go thy way, Daniel:
for the words are closed up and sealed till the time of the end.
10 Many shall be purified, and made white, and tried; but the wicked shall do wickedly:
and none of the wicked shall understand; but the wise shall understand.
11 And from the time that the daily sacrifice shall be taken away, and the abomination that maketh desolate set up,
there shall be a thousand two hundred and ninety days.
12 Blessed is he that waiteth, and cometh to the thousand three hundred and five and thirty days.