And where did the author of the "falsely attributed/corrupted book" get his knowledge? The book pre-dates Jude and says the same thing.
Oral tradition. Which is what I said several posts ago. Did you forget?
Ordinary old parsimony would suggest that Jude, by inspiration, found truth in a book known to his contemporaries, and quoted it (Enoch 1:9), citing its purported author (Enoch 60:8). Not that he was somehow the special recipient of knowledge of an oral prophecy from Enoch that, just coincidentally, happens to be the same as the one in the "falsely attributed/corrupted book."
People are always taking things from oral traditions and using them for their own advantage. They simply took an oral tradition and put it paper. Much like the writer of proverbs did. Are you familiar with the book of Proverbs? or maybe Psalms?
It is very likely that what Moses received on the mountain, that comprised of the first 5 books of the bible, was largely a more detailed retelling of what was already known to the descendants of Abraham.
It's no different from the Apocrypha in that respect: noncanonical Jewish religious literature of the intertestamental period. The only significant difference is that Enoch purports to be from an ancient historical figure, and hence it is classified as a pseudepigraph. Other than that, why is it so surprising that an ancient Jewish religious work survived by being copied generation to generation? Esdras survived, so why not Enoch?
Esdra and Enoch are MANY centuries removed from one another.
I have never meet a single person that believe that the book of Enoch was a written account passed down from generation to generation from before the great flood. I do know some assemblies in Africa claim such but no one really believes them.
Which proves nothing, except that you are guilty of special pleading--only you're too intellectually lazy to bother explaining why quoting Epimenides as "a prophet of their own" (Titus 1:12) is somehow different from saying pseudo-Enoch "prophesied" (Jude 14).
Enoch got his words from God. Epimendies simply quoted something that was true that came from a secondary source. Such is rather obvious. When someone speaks words that are imparted Divinely through them, we call that "inspiration". Paul simply quoted something that was true but not from Divine "impartation". BIG difference.
How would I know? There is no record of anything the historical Enoch might have said or written. There's a book bearing his name written pseudonymously in the third century BC, whose author would have no knowledge of Christ, and seems to be writing a midrash on Deuteronomy 33.
I reject your 3 century BC claim and ask the same question "How would you know"?
John Gill disagrees with you. Not that I follow John Gill but I'm not alone in my determination that BOTH the words of Enoch as referenced by Jude and Moses are concerning the Lord Jesus Christ.
Since your question assumes Jude is citing a genuine prophecy of the historical Enoch and requires me to share your assumption, it is loaded, and therefore invalid.
I've explained a very viable solution. A solution accepted by historically extolled theologians before me.
God preached before the Gospel to Abraham. The Gospel of our Lord Jesus Christ. The same apostles that made those claims is the one who wrote Romans Chapter 1..... wherein he declared the Gospel was known to the old world before the flood.
Rom 1:16 For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.
Rom 1:17 For therein is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith.
Rom 1:18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness;
Rom 1:19 Because that which may be known of God is manifest in them; for God hath shewed it unto them.
Rom 1:20 For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
Rom 1:18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness;
Rom 1:19 Because that which may be known of God is manifest in them; for God hath shewed it unto them.
Rom 1:20 For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
Rom 1:21 Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.
Rom 1:22 Professing themselves to be wise, they became fools,
Rom 1:23 And changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things.
Rom 1:24 Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonour their own bodies between themselves:
Rom 1:25 Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen.
Notice the words... "turned the truth of God into a lie".....
Which is WHY... You find narratives of a "son of God" dying in ancient cultural writings that predate the Torah.
What was known to that old world was rejected and turned into a lie. Yet survived through the children of Noah into what we find today. A "sliver" of truth that spread through cultures as they expanded around this world after the flood.
The idea that we've gradually become the most knowledgeable Christians that have lived on this earth is a lie propagated by such teachings found in Dispensationalism.
There has been more truth LOST to history than WE could every know. God continually has to keep showing up and saving man from himself or there wouldn't have been any thing left a long time ago.