Who are they?

In contrast, focus on the use of terminology in the Bible suggests that “sons of God” (as rare as it is) refers consistently to the members of the divine council (e.g., Job 1-2), and this is the interpretation adopted in the earliest sources (Second Temple period works like the Book of Enoch) as well as reflected in the New Testament (2 Peter and Jude).—Lost World of the Flood, 123