If you read the "accepted" Bible you may find several moments where angels appear as being having flesh, just them looking like you and me, very human-like, they can do this, is not prohibited, or a sin, because they are not really dressed with flesh, but is an appearance.

When Jesus transfigured himself his real spiritual being arises from his real flesh, that is totally different.

SO let say those fallen angels just dressed themselves as beautiful human males to attract the women. Once ancient women get tricked, angels really don't need to have a penis, if you carefully analyze it. They would need just sperm.

But, as you know once the spermatozoa enter the ovule is like adding the last missing piece of the puzzle, then it is like an explosion. It start a series of divisions and processes to the point the ovule is not more an ovule and the spermatozoa is not more an "individual". After the connection, they cannot work individually but as one evolving thing.

So the angels, neither need to have spermatozoa at all, but the information to start the process. So if they can materialize it, they can impregnated a woman.

Not even that set of codes have to be in a form of a spermatozoa. So by trying the overshadow - that is in part materializing their own spiritual DNA- (I forget to mention there is spiritual DNA as well, all things in the Universe, spiritual or material are unique and have also a kind of DNA, even DNA is not the correct term)

Once they materialize their essence, is like 3D printing a copy of themselves in a nano-scale materialized fake spermatozoa, But what they are 3D printing is not the entire themselves but a copy of their spiritual DNA. Very different to Jesus, Jesus materialized his entire himself into that Mary's Ovule.

So about the method in how that DNA reach the ovule, they could use their fake fingers to deposit their DNA into the ovule. They could even pour their DNA into an open wound of a woman and move it until reach an ovule. Not need for penetration at all. Of course, if they have fake flesh they can have a "fake" penis too. It could be as traditional sex, but I think they not use traditional method, even they are guided by a kind of "sexual" desire.

That's precisely why the Book of Enoch was so controversial and removed from the Bible canon, because the Church of those times, instead of consulting the Holy Spirit, start to analyze with their own mind, assuming impossible for angel to have a penis or maybe impregnate a woman by a wound-touch. If angels can do whatever they like it may look like God has no control over them. But they have free will as us.
And free will means they can disobey God, or do whatever they desire even they are not sure if it is bad or not. What they are subjected always is to consult God in all matters.
If they don't consult God then they immediately sin, and the sin keep growing until they loose their state. Eventually their loose also their dwelling. Or both at the same time.

SO keep in mind: Without all the science and the knowledge of genetic material on those days, anyone can found the Book of Enoch highly incredible, so they first call it a "Hidden" Book then a Prohibited one. Then they named it as Not inspired, impossible to be inspired!

But just remember, the part of Book of Enoch when God tell via Enoch to those angels:

Go, say to the Watchers of heaven, who have sent thee to intercede for them: "You should intercede" for men, and not men for you: Wherefore have ye left the high, holy, and eternal heaven, and lain with women, and defiled yourselves with the daughters of men and taken to yourselves wives, and done like the children of earth, and begotten giants as your sons And though ye were holy, spiritual, living the eternal life, you have defiled yourselves with the blood of women, and have begotten (children) with the blood of flesh, and, as the children of men, have lusted after flesh and blood as those also do who die and perish. Therefore have I given them wives also that they might impregnate them, and beget children by them, that thus nothing might be wanting to them on earth. But you were formerly spiritual, living the eternal life, and immortal for all generations of the world. And therefore I have not appointed wives for you; for as for the spiritual ones of the heaven, in heaven is their dwelling.


Note that the verses never tell about angels having penis, or exactly doing a traditional intercourse on woman, not even trying to explain it or giving hints excepting the mention of the Blood. You say that when they left their dwelling they immediately become like us, flesh and spirit but that is simply not possible, because when they are chained because of their sin, a lil after, they are still angels, spiritual angels.

You must not confuse that group of fallen angels, with the other group commanded by Satan and by the other group of "evil spirits" or demons that are the disembodied spirits of the sons of the fallen angels that impregnated woman. They are 3 different entities.

Satan and their fallen angels are another story but share the same pre-good-angelic nature of the second group of fallen angels that sin with women. They also lose their dwelling, but they were allowed to come near the Throne of God to speak (they can't see God again just hear Him). Job's story is about that, precisely. Once Jesus ascended there is no place for any Fallen Angel commanded by Satan to ever reach one step of the Throne. That's why they are thrown back to Earth. When Jesus Ascended Satan and his angels Descended. Whatever Satan ask God to do in the future, he have to ask it before Jesus Ascend or will never be granted.

So Satan's angels are not demons, they are fallen angels. Demons or evil spirits are the spirits that remain in the earth from the Nephilim. And their fathers, the other group of Fallen Angels remain chained in special places inside the Earth.

What could be true, is that after they sin, their nature corrupted as well and maybe a skin-like flesh grow over like a bad leprosy over their spiritual bodies. Just because they mess with flesh, it could be.

When Jesus say:

I have given you authority to trample on Snakes and Scorpions and to overcome all the power of the Enemy; nothing will harm you.

He is talking about these two types of fallen angels: Serpents and Scorpions, not actually animals.
That's why He add: "to overcome the power of the Enemy"
Of course the Enemy is Satan, because the chained fallen angels (Scorpions) can't do anything over humans, as they are chained until the pit is opened in the end of times.
So when Satan exiled to Earth, they must gather the demons to strong their files. So right now in the Earth, freely moving are the Serpents (group of fallen angels that follow Satan) and the sons of the Scorpions, the demons. All working together commanded by Satan, that is the Old Serpent.

As you may notice, the supposedly re-writers of the Bible, after human intervention and so much philosophy mixed with rational thinking (instead of Holy Spirit' Guide to the Truth Easy System) they had un-capitalize the words serpents, scorpions, and even enemy as is where animals.

It make no sense Jesus giving us a power to trample serpents or scorpions as is where real spiritual enemies if they are just animals. That power could be even attained by experienced trainers. Not a real deal, as those animal can just bite, and could make someone death, but they are not real enemies, just animals.

So After Jesus we can now have power over both Serpents and Scorpions, and it is true that the Scorpions will not harm the people of God for the 5 month torture when they are released from the bottomless pit in the future.

The evil spirits, the spirits that remain on earth after the bodies of the Nephilim were destroyed, those spirits can posses more easily an human body, because they had body in the past before being death in the Deluge. Those evil spirits are not angels. They move around the Earth, and some of them group together in arid places, as Jesus noted, they are hungry for flesh because they have no flesh now.

They can take the appearance of whatever is human-animal-like mixed with angel, but not one or another. It could be as the same as the aliens grey of today, the only method to corroborate this, is to invoke the name of Christ and try to expelled it the same way as Jesus did. Only if you are with Christ, otherwise not recommended. :)