I recently added this to my FAQ, but I thought I’d post it here as well.
Do you think Matthew 24:37-38 is a prophecy about the return of nephilim or has anything to do with Genesis 6:1-4?
The short answer to both is no. (I also don’t think it has anything to do with UFOs or aliens). Back around the year 2000 or so I suspected that was the case, but I know better now. It’s not a text-driven argument or position. I blogged about this (and Dan 2:43 as well) back in 2015. There are several problems with the idea, but I’ll summarize my thoughts here.
There are several reasons why Matt 24:37-38 does not connect back to Gen 6:1-4. The sons of God are mentioned nowhere in Matt 24. There isn’t a whiff of divine-human transgression. Their presence is assumed on the basis of the phrase “marrying and giving in marriage,” but that’s actually where the idea breaks down. If Matthew wanted readers to think about Genesis 6:1-4 in these comments, he’d use the Greek terms in the Septuagint of LXX for what the sons of God and mortal women were doing. Matthew doesn’t do that even once. The LXX reads ἔλαβον ἑαυτοῖς γυναῖκας ἀπὸ πασῶν, ὧν ἐξελέξαντο (lit: “they took for themselves women from all which they chose”). Matthew doesn’t use any of these terms. Matthew’s Greek for “marrying and giving in marriage” is γαμοῦντες καὶ γαμίζοντες (lit: “marrying and giving in marriage”). Even if you can’t read Greek you can look at the words and know they aren’t the same as Gen 6 LXX.The other significant problem is that saying Matthew 24:37-38 is about a repeat of Genesis 6:1-4 requires you to ignore parts of what Matthew describes — or deliberately not see the disconnections with Genesis 6:1-4. Here is the full list of what Matthew says will be going on when Jesus returns that was going on in the days of Noah:
– eating and drinking
– marrying and giving in marriage
– not watching / being unaware
Only one of those (conceivably — but incorrectly) could be associated with Gen 6:1-4 — the “marrying and giving in marriage.” The others have no association whatsoever with the supernaturalist aspects of Gen 6:1-4. So why impose the supernaturalist character of Gen 6 onto what Matthew says? It’s an arbitrary decision, and one made incoherent and unsustainable by the lack of any connection to the LXX of Gen 6:1-4. When biblical writers want their readers to cross-reference an OT passage with what they are saying, they create connections. Matthew doesn’t do that even once.