it does indeed make some things very explicit.

it makes it very clear that angels are the same species as us, they can breed with us.

it makes it very clear that the angels were white, as in nordic white, with blonde or red hair (often red, interestingly). i just should add that most people have ancestry tied to the fallen angels, even the darkest central africans, as you would understand, every conception is a shuffling.

it goes into great detail about how these angels can resurrect us and peer into our minds and hearts and collect all the evidence required on Judgement Day.

it makes it very clear that in the future there will be an event that will completely obliterate all life on earth, and that just prior to this, the leader of the rebellion, and it uses the words 'satans' in several places indicating that there is many 'devils' and that they are bound in some kind of high tech, quantum/timelord style prison and have only the power to telepathically communicate with us, and are going to be let out of their prisons just prior to the judgement and following that the 'elect' will be taken up into 'the heavens' and the very souls of these evil angels will be destroyed, along with all their submissive, and wanton servants.

so it is technically revealing things but it also talks about the end of the "world" in the sense of "be of the world but not in the world" - the obedient flock of Satan and his minions, and at the same time, literal in the sense of the face of the earth will be forever changed after this.

not only that, it also talks about how the scriptures would be completely defaced and twisted. not ironic then that the catholic leadership purged this book, even though it contains the clear source of many of the things Jesus says.