Revelation 5:4
And I wept much, because no man was found worthy to open and to read the book, neither to look thereon.
Cross-references
Daniel 12:9
Allusion
Daniel 12:9 says the words are sealed until the end — explaining why the scroll in Revelation is sealed and no one can open it yet.
Daniel 12:8
Parallel
Daniel 12:8 shows Daniel not understanding the vision — similar to John weeping over the sealed scroll. Both express human incomprehension.