Thank you for sharing and for your patience, however...
Let me share this then:
The Book of Enoch and The Secrets of Enoch
#1. You cannot say that the whole copy of the Book of Enoch is the same as the fragmentary ones in Aramaic and the fewer still in the Greek & Latin.
#2. You do not know the date of the 3 copies of the surviving whole Book of Enoch if it had been written before Jude or any of the scripture of the N.T. Indeed, all your quotes can be seen as plagiarism to give them a sense of legitimacy as a fraudulent book written after the N.T.
Ever noticed the style of your quotes of scripture in the Book of Enoch really do not line up with the majority of that Book of Enoch's writing style?
One time as an elementary student, I had copied some paragraphs from Doc Savage paper back in writing a fictional story with me & my friends in it for fun as a hobby. I made the mistake of showing it to my teacher at school who thought it was great, but he only referred to the parts I had copied. Then I told him that I did not write that part but copied it to give my story something to play off of. He was disappointed after that. So was I, in finding out that what I had written wasn't really good at all. So I trashed it. That was when I found out about plagiarism being bad or wrong.
The point here is... you can see the quotes you made that you seem to think the Bible referenced it from Enoch, but the rest of the writing style of Enoch do not match the writing style of the quotes that the Bible supposedly took from Enoch.
#3. You cannot say that being of Alexandrian origin where poetic licensing and gnosticism has been known to exists, had no bearings on suspecting those surviving 3 whole copies of the Book of Enoch as a complete fraud, and there has been frauds.
So do not see the 3 whole copies of the Book of Enoch as if they share the same dates of the fragmentary ones which would go back to before 300 B.C. Just because the fragmentary ones are dated 300 B.C., it does not mean the 3 whole copies of the Book of Enoch is of the 300 A.D. origin, let alone of those Book of Enoch which were of Jewish fables for why Jewish scholars did not bother to upkeep, because they were not scripture.
Unless you have information to the contrary, this is why I had been saying that the ones found has to be frauds because you cannot say how old they were or when they were written and because of the writing style of the supposed quotes of the Bible from the Book of Enoch, the rest of the Book of Enoch do not match that writing style at all that the Bible supposedly quoted from Enoch. It is more than likely that the Book of Enoch as a fraud, plagiarized the Bible.