Peter’s letters reference imprisoned spirits and disobedient angels, echoing Genesis 6 and the Book of Enoch. His terminology, widely understood in the first century, supports the angelic interpretation.
Philo of Alexandria writes twice in his books about the Giants and Angels in Genesis
What are the Nephilim in Genesis 6? Discover biblical and historical views on the sons of God, giants, and why this story still resonates today.
In chapter 56 of 2 Baruch, the angels that descended and ‘mingled with women’ are mentioned briefly in a vision describing the history of the world beginning with the creation.
From the Biblical canon, Jude gives us a definite reference point for the view of the early church on Genesis 6, as well as confirming their familiarity with the Book of Enoch.