The book of Genesis is a record of beginnings. No doubt there is a shift to something new in Genesis 6:2-6 which forms the basis for why the flood came upon all mankind. However, the preceding context of chapters 4-5 cannot be so easily divorced from this sequence of events. There is a clear separation between the line of Seth and Cain that is provided in much detail. There are clear indications that the line of Seth was a godly line, whereas, the line of Cain began in open rebellion against God and the lack of true worship and morality prevailed in that line. The study source that I referenced for you proves this case clearly (
https://www.apologeticspress.org/rr/reprints/sons-of-god-in-genesis-6.pdf).
Your comment on "began" and how it is used does not really support your position. In each instance, where the term "began" is introduced, what it introduces continues to be the subject in the same verse. For example:
Ge 9:20 And Noah began to be an husbandman, and he planted a vineyard:
Ge 10:8 And Cush begat Nimrod: he began to be a mighty one in the earth.
Ge 41:54 And the seven years of dearth began to come, according as Joseph had said: and the dearth was in all lands; but in all the land of Egypt there was bread.
Ge 44:12 And he searched, and began at the eldest, and left at the youngest: and the cup was found in Benjamin’s sack.
What Noah "began" was carried out in planting a vineyard ending up being drunken from that vineyard. What Nimrod began was to be a mighty hunter, thus containing the very subject in the same verse. Seven years began what God had predicted and the same verse continues the subject began. What Jospeh began with the youngest continued to the eldest and the verse continues the same subject. Therefore, what "began" in Genesis 6:1 contains the same subject begun - "men began to multiply" or marriage. However, that has been the subject in chapters 4-5, the multiplication of men separated in two distinct lines, one which is godly and the other which is ungodly.
The hebrew in verse 1 demands no such thing, that is your pure imagination. As before shown by the study of "began" the subject matter is contained in the very same verse. Therefore, if the Hebrew indicates anything by repetitive usage of "began" it fully supports that marriage and populating the earth by mankind is still the subject in view except that this particular marriage between two different types morally corrupts mankind in so much that a flood was God's response to such wickedness that resulted in this particular kind of marriage. In direct contrast, the marriage and reproductive line of Seth produced a far more godly line than that of Cain.
Again, pure imagination your part. There is no "how" of marriage defined here. Instead, it is simply marriage that is being declared not explained "how." Verse one uses the normal Hebrew for reproduction among human beings ("began to multiply"). Verse two uses the same normal Hebrew terms for marriage "took them wives." That phrase is used multitudes of times in the Old Testament simply for common marriage. There is no "how"of explanation but only assertion of the same common language used for ordinary marriage between human beings.
Not so! The preceding context makes Genesis 6:1-2 a natural conclusion to the aforesaid carefully separated lines now being mixed. The characteristics of godliness are directly attributed to the line of Seth repeatedly. The complete absence of any godly characteristics is obvious in the line of Cain. The natural consequence of being "unequally yoked together" is that the same as in the New Testament reason for prohibiting such a marriage. So for you to say that the Hebrew construction "hinders" my interpretation is simply a fabricated nonsense.
Again, that is the thinking of some, but not all. For example, the conclusion drawn in verse 3 by God is "with men" not with "angels and men." God specifically states that His response is "with men" whom he defines further as "flesh" not angelic. When Satan entered into the human domain as instigator of sin, God dealt with the instigator Satan first in judgement, yet here in verse 3 God's response to the sin in question has no mention of anyone but "with men" who are further defined as "flesh" not "with angels AND men."
The words "ha'adam" in verse 2 demands a more limited portion of mankind than in verse 1. The term "daughters" limit what portion of mankind is in view concerning those "taken in marriage." I believe the words "sons of God" also limit what portion of mankind took the "daughters of men" in marriage. So yes, verse 1 speaks defines the realm in general wherein reproduction through marriage occurred, thus confining this populating exercise through marriage within the boundaries of human beings (not angels and human beings), whereas, verse 2 then becomes specific within that general boundary and defines the precise sub-groups within humanity in general that entered into marriage. Of course, my view is that "sons of God" refers to those formerly that were "called by His name" (Gen. 4:26b) and although angels are frequently mentioned in the book of Genesis they are never referred to as "sons of God" by Moses anywhere else.
I am not misreading at all. Is it not your argument that the intermarriage between angels and men is what produces "Nephilim"? If not, it sure is the common argument of those who advocate your position. Therefore, if that is the condition for producing "Nephilim....on earth IN THOSE DAYS" then after God destroyed all mankind, including the Nephilim, only the same conditions could explain their existence "afterward" as Numbers 13 clearly claims the "Nephilim" did exist after the flood. Hence, your interpretation requires not only a SECOND fall by the angels in Genesis 6 but a THIRD after the flood. Thus the nonsense of your interpretation becomes more nonsenical.
The precise definition of the terms may be complicated but where do you get the idea that there is complication in the Hebrew grammar for suggesting that Nephilim are not further described as "men of renown"?????? Where do you get the idea that there is a complication in regard to "timing" when you admit that the same term is used after the flood in Numbers 13??? I think the only complication is for your position.