Correction 31.01.2015: it was previously stated under 'Assessing the 1 Enoch Allusion View' that Gen. 6:1-4 LXX translates the Hebrew bene elohim ('sons of God') with angeloi. This is incorrect. While the LXX translators render bene elohim with angeloi in Job 1:6, 2:1 and 38:7, they provide a literal translation, hoi huioi tou theou, in Gen. 6. The author apologises for this error.
Addendum 12.08.2015: it seems that my previous correction still did not provide the full story on Gen. 6:1-4 LXX. In fact, there is a text-critical issue here. Some manuscripts have οἱ υἱοὶ τοῦ θεοῦ ('the sons of God') while others have ἄγγελοι θεοῦ ('angels of God'). The standard critical text of Rahlfs-Hanhart has υἱοὶ, and Hultin states that this is probably the original reading (Hultin, J. (2010). Jude’s Citation of 1 Enoch. In J.H. Charlesworth & L.M. McDonald (Eds.), Jewish and Christian Scriptures: The Function of ‘Canonical’ and ‘Non-Canonical’ Religious Texts (pp. 113-130). London: T&T Clark, p. 114.) However, other scholars seem to regard ἄγγελοι as the original reading (Adelman, R. (2009). The Return of the Repressed: Pirqe De-Rabbi Eliezer and the Pseudepigrapha. Leiden: Brill, p. 115 n. 20; Carson, D.A. (2007). 2 Peter. In G.K. Beale & D.A. Carson (Eds.), Commentary on the New Testament Use of the Old Testament (pp. 1047-1061). Grand Rapids: Eerdmans, p. 1050; Mathews, K.A. (1996). Genesis 1-11:26. Nashville: B&H Publishing, p. 325 n. 90; Bateman, H.W., IV. (2013). Interpreting the General Letters: An Exegetical Handbook. Grand Rapids: Kregel Academic, p. 258 n. 21). I haven't seen a specific text-critical argument in any source so at this stage I will just acknowledge the uncertainty but note that the standard critical text has 'the sons of God'.
