Check out this website: https://www.youtube.com/user/TheLamarzulli
He has written several books and also made multiple videos on the subject.
Genesis ch:6 in the bible talks about them, they were the illicit offspring of the “watcher” angels (sons of God) and human women (daughters of men).
You’re late to the party jonno.
Some of us have been posting & writing on it for years here on FR. Every thread we get castigated on it by the typical lazy folks who refuse to see outside of their comfortable 21st century American box.
I ended up doing extensive investigation to this, while our idiot Democrat Governor was trying to destroy small businesses.
Check out Michael S. Heiser. He had published several books, most of which are targeted at Theology PhD Candidates. One that is designed for lay people is Super Natural.
The Nephilim are the result of something that occurred in Genesis 6:1-4...where the Sons of God notice that the daughters of men are beautiful and decide to marry and make children with them.
This is where Hebrew comes in. Elohim (singular) is recognized as YHWH. Elohim (plural) also appears in the Bible, and this is one instance. Call these lesser gods or spiritual beings.
There are lots of YouTube videos of Heiser explaining different aspects of the Spiritual Realm. His ‘aha!’ moment came when a fellow PhD student handed him a Hebrew version of the Bible open to Psalm 82...where Singular Elohim was standing in the midst of (plural) elohim...and reading them the riot act. He had read this passage at least 5 times before, but apparently not in Hebrew.
Amir Tsarfati is a Messianic Jew who lives in Israel. He states that one of the nice things about Hebrew, as opposed to say...English, is that they do NOT have many words to describe the same object.
The first time I encountered Heiser was when I had watched a video on the Nephilim, and then YouTube suggested several others...including Heiser’s.
If you want to cut to the chase, watch his video on the Nephilim, and then branch out to his other videos/books.
But for his insights, I would still be an Agnostic, thinking that parts of the Bible made no sense at all.
There are supposed to be Nephs in the caves of Afghanistan. Supposedly one wiped out a US army patrol a few years ago. The army sent a unit out searching for the patrol and the giant attacked them. They riddled it with automatic fire and killed it then the CIA came in with a Blackhawk and took the body away. Good story but I don’t know if its true.
humor
Research “The Book of Enoch.”
It was supposedly written by Noah’s grandfather, and details why the Nephilim led to to the great food.