Voynich is encrypted ENOCH

[Rafal]

What's the earliest known transmission date of 1&2 Enoch to Europe?

While I am not the post author, I am personally interested a bit in Christian apocrypha and know some stuff about Enoch so let me answer.

1 Enoch and 2 Enoch are totally different things. They share the same hero - biblical patriarch Enoch who was taken alive to Heaven. But they were
created by different authors and "rediscovered" in totally different circumstances.

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1 Enoch: You are not allowed to view links. Register or Login to view.
Actually a compilation of different authors. Known to Church Fathers but later forgotten, apparently none of European copies survived.
Never forgotten in Ethiopia.
Confirmed ownership by Europeans is 18th century and translation from Geez is the 19th century:
Better success was achieved by the famous Scottish traveller James Bruce, who, in 1773, returned to Europe from six years in Abyssinia with three copies of a Geʽez version

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2 Enoch or Slavonic Enoch: You are not allowed to view links. Register or Login to view.
Not related to Ethiopia. Survived in Europe in Bulgaria in Old Slavonic language. Never really forgotten there but "rediscovered" by western academics in the 19th century who only then realised its importance.

So 1 Enoch was brought to Europe in the 18th century and 2 Enoch has always been in Europe.

Now you can of course create some fancy theories that someone didn't have to travel to Ethiopia but had a 1500 years old private copy of 1 Enoch in Greek which somehow survived