Contradiction with Matthew 24:36
Daniel 12:4 speaks of sealing up knowledge until the end times, whereas Matthew 24:36 indicates no one knows the time of the end.
Matthew 24:36: But of that day and hour knoweth no [man], no, not the angels of heaven, but my Father only.
Contradiction with Revelation 22:10
Daniel 12:4 instructs to seal the words until the end, whereas Revelation 22:10 states not to seal the prophecy because the time is near.
Revelation 22:10: And he saith unto me, Seal not the sayings of the prophecy of this book: for the time is at hand.
Contradiction with Ecclesiastes 1:9
Daniel 12:4 suggests increased knowledge in the end times, contradicting Ecclesiastes 1:9's assertion that there is nothing new under the sun.
Ecclesiastes 1:9: The thing that hath been, it [is that] which shall be; and that which is done [is] that which shall be done: and [there is] no new [thing] under the sun.