Genesis 6:4
New International Version
4 The Nephilim were on the earth in those days—and also afterward—when the sons of God went to the daughters of humans and had children by them. They were the heroes of old, men of renown.1 Enoch internally written before the flood by Enoch 7th from Adam inspired scripture hidden (apocrypha) from the swine, and unworthy by God himself explains how the sons of God were fallen angels, and Jude, and Peter imply the same thing when they say angels left their heavenly abode were put in chains until judgement which is what 1 Enoch says also.
The Cave of Treasures internally is written after 70 AD as it says Titus has destroyed Jerusalem. Inspired scripture stopped 70 AD (Dan 9 said vision, and prophecy would be sealed up by then) so it is not inspired. Some manuscripts say it was written by Ephrem the Syrian who died 373 AD. That text says sons of Seth mated with daughters of Cain, and made the giants, and explicitly says fallen angels were not involved. Augustine of Hippo 400 AD says the same thing. Conflict of Adam, and Eve with Satan (which is divided into 4 books) also say the same. That text was also written after 70 AD as it says Titus has destroyed Jerusalem, and shares a lot of content with Cave of Treasures. That text also says Melchizadek was the son of Cainan. I'm not sure if it was written before or after cave of treasures. So Ephrem the Syrian is the earliest author denying what 1 Enoch says AFAIK. In those texts sons of god meant Seths children as Seth, and other people in that lineage were righteous Genesis 6:9. Augustine also promoted the idea that 1 Enoch was not written pre flood. So up until 300s AD the majority of Christians believed 1 Enoch was written pre flood like Jesus, Jude, 1 Enoch, and all the other evidence says it was (there is stuff in the dead sea scrolls about Abraham reading Enoch when in Egypt, and Levi passing Enochs books to his children). My guess is the synagogue of satan after 70 AD started saying to Christians you can't trust 1 Enoch it is a myth it is pseudepigrapha it was written after the flood etc, and a lot of Christians believed them just like Adam, and Eve believed the devil in the garden of Eden, David believed satan with the census (God allowed the devil to tempt David) , and just like 50 million Christians today believe the synagogue of satan when they say "god gave us palestine help us kill steal and destroy in the name of the god of abraham'. The reason the synagogue of satan did not like 1 Enoch is because of the son of man that existed before creation with the lord of spirits prophecy (ask chat GPT to show all the prophecies of Jesus in 1 Enoch) which was used by Daniel later on, and when Jesus called himself the son of man the high priest rent his garment, and said “He has spoken blasphemy! Why do we need any more witnesses? Look, now you have heard the blasphemy. Mathew 26: 65.
