“Genesis 6:2That the sons of God saw the daughters of men that they were fair; and they took them wives of all which they chose . 3 And the LORD said , My spirit shall not always strive with man, for that he also is flesh : yet his days shall be an hundred and twenty years. 4 There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown. “
I think we have two terms being mixed up; I think the mistake people often make(me too,I’m afraid) when discussing Genesis 6 is sloppily confusing the terms “SONS of God” with the terms used for the progeny produced by such matings with the “daughters of men” or “nephilim”.
The Jewish Orthodox Bible translates the phrase “sons of God” as bnei haEloihim, the same phrase as was used in Job 2 in describing the “sons of God” appearing before the throne of God, when “hasatan” or satan appeared there as well. Clearly divine beings.
The nephilim were the products of this mating between these divine beings and human females.(hence “giants, tyrants, bullies”, men of renown, heroes of old)
The question is now better defined...were the “Sons of God” divine fallen beings who “left their first estate” as Jude states or were they of a Godly line of Seth that fell a foul of their own sinful lusts? Regardless of where one falls on the question, the Nephilim were the products of such unions with the daughters of men and the effects of spiritual darkness were accelerated and magnified upon the Earth because of such a mixture.
Jesus Christ said there is no marrying of angels. They obviously can’t reproduce. In Gen. 6:1 the mention is made of men multiplying and ‘daughters were born unto them’. Why was it not mentioned that both ‘sons AND daughters were born unto them’? Because the theme appears to be the fact these godly sons were taking ‘wives of all which they chose’, probably even more than the harem that Solomon accumulated; and we saw how that worked out. Even David’s multiple wives, though only a few, caused death and turmoil for Israel. Multiple wives was mans’ idea. God made Adam and Eve, not Adam and Eve, Nancy, Susie, Linda, and more.
What is the next comment from God.......”My spirit shall not ALWAYS strive with man..” (note he didn’t say he wouldn’t strive with ‘sons of God’ or angels, or giants or nephils). He further clarifies that in verse 5: “And God saw the wickedness of man (not ‘the sons of God’) was great in the earth, and that every imagination of the thoughts of his heart was only evil continually”. There’s no recorded rebuke to ‘fallen angels’ for what had happened. This was a man-made mess, brought about by the original fall into a sinful nature in Eden.