Genesis 3 15 says: “And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.
Satanic hatred for the woman’s seed began right away, before the deluge. The woman’s seed = all born of God, but the heel belongs to Jesus Christ “the lamb of God” alone (Jn. 1:29-34) whose ransom sacrifice reconciles all things in heaven and earth to God (Col. 1:19-20).
To corrupt man further Satan cast down his fellow rebels, those among them who cohabitated with humanity are called “Nephilim” (fallen ones). Their contemporaries (Gen. 6:4) were the angelic sons of God sent to counter their evil influence.
The population of the earth likely numbered in the billions when the event in Genesis 6 occurred.
1 When man began to multiply on the face of the land and daughters were born to them,
2 the sons of God saw that the daughters of man were attractive. And they took as their wives any they chose.
3 Then the LORD said, “My Spirit shall not abide in man forever, for he is flesh: his days shall be 120 years.”
4 The Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of man and they bore children to them. These were the mighty men who were of old, the men of renown.
5 The LORD saw that the wickedness of man was great in the earth, and that every intention of the thoughts of his heart was only evil continually. (Gen 6:1-5 ESV)
Man resented God cast them out of the garden of Eden and denied them immortality access to the tree of life (Gen. 3:22-24). Its implied by Genesis 6:5 they hatched a plan, a “work around” to gain immortality for their grandchildren and perhaps every generation after that. Angelic/human intercourse would produce hybrid offspring have “divine (elohim) nature” making them immortal. Then they could obtain Satan’s promise they would be “like god”.
The Nephilim appear first in Genesis 6:4 because they were instrumental in the success of this conspiracy against God and His sons. The Nephilim enticed the angelic sons of God parading their human wives before them, the beautiful women eventually seducing the angels of God. They left their proper place and took as many wives as they chose (2 Pet. 2:4; Jude 1:6-7). [Christ said angels in heaven don’t marry (Mt. 22:30; Mk. 12:25), He didn’t say rebellious angels on earth can’t have sex.] God blames man for this as He gave them dominion (Gen. 1:26-27) and they could have easily said “No”.
The success was phenomenal. Any sacrifice to God must be perfect, without blemish (Ex. 12:5; Dt. 17:1). Human/angel interbreeding corrupted the image of God in man (Gen. 1:26) with the image of angels. That follows from what was said of Noah, he was “perfect in his generation” (Gen. 6:9) implying that us a distinctive, unlike others of his time.
It is for this reason the flood came, to completely efface angelic DNA from the human genome. The reference to Nephilim in Num. 13:33 was an exaggeration by cowardly spies who didn’t want to battle the children of Anak, see how they changed from Anak to Nehilim (Num. 13:28-29, 31-33). Later Caleb easily dispatched three sons of Anak (Josh. 15:14) who are called everything except Nephilim (Dt. 2:11-12). All the Nephilim caught on earth by the flood were denied re-entry into the dimension of heaven and they died physically (Ex. 7:22) hence we read of “spirits of demons” (Rev. 16:14; compare Ac. 23:9) because their disembodied spirits became the demons in the abyss (Rev. 9:1-3). The fallen angels who hadn’t yet sired hybrid children died in the flood also, but became the wandering demons and evil spirits craving a return to corporeality possessing the bodies of insects, animals and men (Mt. 12:24; Lk. 8:30-33). Their evil hybrid offspring joined them becoming the unclean spirits wandering the earth, inferiors to the demons. Those hybrid offspring who were “men of renown” and otherwise God fearing, but who couldn’t believe Noah’s preaching God would spare them (1 Pet. 3:18-20) to await Christ’s preaching when they repented and thereby became a “like figure” to the church which repented from their disbelieve to be saved.
As for the angelic sons of God who sinned, they joined Satan’s fallen angels in Tartarus bound and chained as the Devil one day will be (Rev. 20:1-2), the lowest hell (2 Pet. 2:4; Jude 1:6). In this they are like human children of Satan, although the everlasting fire was not prepared for them, having become children of the Devil they reap what all of the Devil’s children reap, everlasting fire (Mat. 25:41).
Lady Zion, heavenly Jerusalem (Rev. 3:12-13; 21:1-the “mother of us all” (Gal. 4:26) is clothed with the sun and moon and stars because through her God’s redemption and light has dominion over all (Jer. 31:35; Gen. 37:9-10; Gal. 3:9-16). Through her the Redeemer comes, the “child” who ascended into heaven.
She is a ‘great sign” in heaven meaning she transcends time, coming into existence before the foundation of the world (comp. Rev. 13:8) when in the Mind of God He foreknew all that will ever be, and for the joy of having His children live with Him He suffered with much longsuffering vessels of wrath, the fall and subsequent rebellions (Rom. 9:22-24; 11:25-26, 33-36). Love before time, for us.
Some might object claiming Michael and his angels cast the Devil and his angels out during the end time week. But they failed to notice there are two descents of evil angels, one Satan does the casting down (Rev. 12:4), the other Michael and his angels cast down (Rev. 12:7-9) Therefore, an interval exists allowing for the angels Satan cast down to reappear in heaven, to later fight the war against Michael. Therefore, this is like an update on the war against the woman’s seed which began in Genesis, adding in the events that occur in the end time.
Moreover, the Genesis events are parallel to what Satan and his Nephilim will do in the end time, promise mankind immorality and that they will be like God, through the alleged science of the “extraterrestrial creators.”