After the Fall, Satan and those angels who joined him lost their fiery covering and were trapped behind the veil, thereby limiting their influence in the realm of men. To combat this limitation, Satan enacted a plan: He would create human-angel hybrids that would provide them their very own biological suits for their embodiment and incarnation, to be the earthly habitations in which their spirits could dwell. It would be the best of both worlds— all the power, intelligence, and immortality of angels with a biological “tent” for their spirits to inhabit, making them gods in the flesh. The bodies would be created as human-angel hybrids, but the bodies would be void of a spirit and could therefore be inhabited by a fallen angel.

While we know ultimately from Revelation 12 that one-third of the angels followed Satan, we do not know the when and why. What we do know is that the “sons of God” did something so evil in the days of Noah that God would eventually send a flood to erase it all. It is entirely possible that many of the angels who followed Satan chose that path in the time around and before the Flood. Genesis 6 only tells us what they did, not whether they were bad before this action.
“When man began to multiply on the face of the land and daughters were born to them, the sons of God saw that the daughters of man were attractive. And they took as their wives any they chose... The Nephilim were on the earth in those days, and also afterward, when the sons of God came into the daughters of man and they bore children to them. These were the mighty men who were of old, the men of renown.” Genesis 6:1-2, 4
Some clues suggest these angels had not yet committed iniquity; hence they had not yet fallen. Peter gives his interpretation of what happened in Genesis 6. He says, “The spirits in prison (1 Peter 3: 19), who formerly were disobedient, when once the Divine longsuffering waited in the days of Noah” (1 Peter 3: 20). Notice that he speaks of the angels who were disobedient and sinned in the days of Noah. Jude gives a similar interpretation; and based on the context, it sounds like the angels had not yet joined Satan’s team (Jude 1:4-5). Mating with women was their inauguration into his kingdom. Referring to the angels who heeded the temptation, the book of Jude explains how they “did not keep within their proper domain [arkhen]” (Jude 1: 5a). That means they did not remain in the spiritual realm where they were authorized to be, “but abandoned their own place of residence [oiketerion]” (Jude 1: 5).
In Enoch, we get the following report: “It happened after the sons of men had multiplied in those days, that daughters were born to them, elegant and beautiful. And when the angels, the sons of heaven, beheld them, they became enamored of them, saying to each other, Come, let us select for ourselves wives from the progeny of men, and let us beget children.” (1 Enoch 7: 1-2)
By persuading angels who are still on God’s team to procreate, Satan solved a logistics problem. Fallen angels appear to be limited in their ability to freely enter this realm, whereas the good angels can come and go at will. The fallen angel’s inability to physically manifest in this realm appears to be due to their power problem; they need blood to energize themselves. When they have enough blood offered, like with an occultic event or séance, they seem to be more easily able to manifest into this realm.
When the angels procreated with women they must have left their own spirit-based body. The implication is they transferred their essence (DNA information code) into the bodies of the Nephilim. To understand this we need to consider where the soul of a newborn baby comes from? The transmission model of the soul makes the most sense. It teaches that the soul of a newborn comes from the parents— it is the immaterial information that is passed in the genes from both parents to the child.
If it takes two humans to form a new soul in the child, then a supernatural being + human being would not yield a human soul. It follows that the union of an angel and a human would have genetically created a physical body and that body would contain the seed of the fallen angel. What is inside of a seed? Information – a non-material entity. Jude says the angels “left their own abode (spiritual bodies).” They left them for the hybridized bodies we call Nephilim. There is no technical reason that angels could not pass on their seed. The bodies of the Nephilim would be human-angel hybrids and the indwelling spirit would be one hundred percent angel-spirit.
A son will inherit an identical copy of his father’s Y chromosome, and this copy is also essentially identical to the Y chromosomes carried by all his paternal forefathers meaning that all men throughout time have had a copy of Adam’s Y chromosome. Jesus did not have Adam’s Y chromosome and hence did not carry the defects or degeneration (sin), inherent in the copies of Adam’s Y chromosomes in every subsequent male descendent. In Jesus’ case, his spirit/soul (essence) must have been placed there. It was not transmitted because He is eternal. His soul/spirit did not originate from Mary and the Holy Spirit; He existed beforehand.
The fallen angels’ unrighteous action brought a curse of immense magnitude upon themselves and the world. “There were giants on the earth in those days, and also afterward, when the sons of God came into the daughters of men and they bore children to them. Those were the mighty men who were of old, men of renown.” Genesis 6:4
The Book of Giants, a grouping of Aramaic fragments found with the Dead Sea Scrolls, corroborates Genesis 6 by noting the corruption the angels wrought upon the Earth. The fragments have missing gaps, but they have been interpreted as: [ . . . they defiled ] [ . . . they begot giants and monsters ] [ . . . they begot, and, behold, all the earth was corrupted] [ . . . with its blood and by the hand of] [ . . . giant’s which did not suffice for them] [ . . . and they were seeking to devour many] [ . . . the monsters attacked it], (4Q531)
Notice how the angel’s corruption also led to the creation of monsters which further corrupted the Earth.
The angels realized that once they crossed the line, they could never return to God’s kingdom. Their taking “wives for themselves of all whom they chose” (Genesis 6: 2) would be the point of no return; there was no going back. Ever. The eternal nature of their decision may be why they took an oath as recorded on an inscription on Mt Hermon “Their whole number was two hundred, who descended upon Ardis, which is the top of Mount Armon. That mountain, therefore, was called Armon, because they had sworn upon it, and bound themselves by mutual execrations“. Hermon (Armon) comes from ḫāram which means “a ban for utter destruction”, the compulsory dedication of something which impedes or resists God’s work, which is considered to be accursed before God. It is called “Hermon” because the angels committed to a curse upon themselves if they should not continue with their plan, which is another indication that when they came down upon Hermon, they still had a lot to lose.
“Then their leader Samyaza said to them; I fear that you may perhaps be indisposed to the performance of this enterprise; And that I alone shall suffer for so grievous a crime. But they answered him and said; We all swear; And bind ourselves by mutual execrations, that we will not change our intention, but execute our projected undertaking. Then they swore all together and all bound themselves by mutual execrations.” (1 Enoch 7: 2– 7)
This ancient event has lived in the memory of mankind for millennia. It has been called Hermon (laid under a curse) since the earliest of times (See Deut 3: 8; Josh 11: 13). The area south, southeast of Mt. Hermon was known as Bashan, which means snake-dragon. The mountain and surrounding area were considered the abode of the gods, both heaven and hell simultaneously, and home of the Rephaim, King Og, Enlil / Baal/ Satan.
Satan quite likely gloated in his “perfect plan” coming together in the land of Bashan. After all, the seed of the Messiah would never be able to stomp on his head if the image-bearers of God were destroyed, and if they were recast in his image instead! Mankind would become the ultimate slave by yielding up their flesh for Satan’s team to perpetually inhabit. When one considers Satan’s diabolical plan it is easier to understand why God had to destroy all of mankind except Noah and his family (their seed was uncorrupted) with a worldwide flood.

