As I have written about concerning the Nephilim, some think that Genesis 6 describes Angels marrying Human women and having children, calling them the "Nephilim". Let us look at the scripture in which they are first mentioned in Genesis 6:4 -
The Nephilim were on the earth in those days—and also afterward—when the sons of God went to the daughters of men and had children by them. They were the heroes of old, men of renown.
For a long time I've wrestled with this. The understanding of who the Nephilim were is determined by two facts that the Bible gives about them:
1. The fathers of the Nephilim are called "the Sons of God" - as so many people point out that the Bible uses this title for men and angels.
2. The Nephilim were on the earth "in those days" (before the flood) and "afterwards".
3. The King James Version and many English translations translate "Nephilim" as "giants" instead of the literal translation: "Fallen ones". We are told that they were men and special: "men of reknown".
I found a video on the Internet in which a Pastor explains the two major ideas about who the Nephilim were and he said the same thing that my own Pastor teaches: The Nephilim
Here is a video of Pastor Scott Richards explaining who the Nephilim are:
I have also found a video on GodTube that asserts to show a picture of a large human-type skeleton uncovered in Saudi Arabia. The problem is that I can tell the one who posted this video is intending to prove that the Nephilim were giants because they were the offspring of Angels and humans. I don't have an answer for why there were nations of giants - people who were 9 ft tall like Goliath. The one thing I am now sure of is that the Nephilim are not the descendants of Angels. Here is video of the "giant" found in Saudi Arabia.
The pictures of this post shows that there are a great many of people who believe that the Nephilim were the offspring of angels and humans. Fortunately, there is no scripture that backs it up.