Here is this man's thoughts...I haven't studied it enough to give an opinion. Click on the link for the complete study.
http://www.godandscience.org/doctrine/nephilim.html#n01
Who Were the Nephilim and Sons of God?
by Rich Deem
Introduction
There is somewhat of a controversy in Christianity regarding the identification of the Nephilim and sons of God mentioned in the Genesis flood account (
Genesis 6:2-4). Are the sons of God the human offspring of the godly line of Seth or angelic beings (demons)? Were the Nephilim a race of giants that existed before and after the flood or is the word just a generic term describing large strong people?
Nephilim and sons of God:
Genesis 6
Let's look at the passage in question, in context:
Now it came about, when men began to multiply on the face of the land, and daughters were born to them, that the sons of God saw that the daughters of men were beautiful; and they took wives for themselves, whomever they chose. Then the LORD said, "My Spirit shall not strive with man forever, because he also is flesh; nevertheless his days shall be one hundred and twenty years."
The Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of men, and they bore children to them. Those were the mighty men who were of old, men of renown.
Then the LORD saw that the wickedness of man was great on the earth, and that every intent of the thoughts of his heart was only evil continually. (
Genesis 6:1-5)
The passage describes the Nephilim as being "men" twice, using two different Hebrew words. It does not use the Hebrew words used to describe angels ("angels," "cherubim," and "seraphim"). It's pretty obvious from the context that God was not happy about what was going on between the sons of God, the Nephilim, and the daughters of men. Let's go on to examine how other biblical passages use these terms.
Sons of God
Unfortunately, the phrase "sons of God" appears in only five verses from only two books of the Old Testament. Two verses are found in the
Genesis 6 flood account. The other three verses are found in the book of Job. From the book of Job, the context clearly indicates that "sons of God" are angelic beings, since they enter directly into God's presence1 or existed before the creation of the earth.2 In the New Testament "sons of God" always refer to redeemed human beings.3
The giants (Nephilim)
The Hebrew word used to describe the Nephilim occurs in only two verses of the Old Testament, one in our passage from
Genesis 6 and the other in the book of Numbers.4 From the book of Numbers, we find that the descendants of Anak are part of the Nephilim.5 Since Anak was a Canaanite,6 it would be logical to assume that the Nephilim were human, rather than angelic. The verses tell us little about the people, other than they were strong and tall and lived in fortified cities. Were these Nephilim the same as the Nephilim of
Genesis 6? Contrary to the beliefs of many, Nephilim does not describe a race of peoples. In the Bible, races of people groups were designated by their founding male ancestor.
So, the Anakim were descendent of Anak. However, the Nephilim are never described as being descended from anybody.
The term actually means "giants,"7 being derived from the Hebrew word nephal, which means to "fall upon" or "overthrow," referring to their warlike nature.8 Since the Old Testament describes Nephilim both before and after the flood, if the Nephilim were a race then it would contradict the rest of Scripture, which indicates pretty clearly that there were only eight survivors of the flood.9
Demonic or angelic beings?
Some Christian have speculated that the "sons of God" from
Genesis 6 were demonic beings, who had sexual relations with human women, and are now condemned to future judgment.10
However, Jesus made it clear that angels are asexual beings who do not engage in sexual relations at all.11 Since demons are merely fallen angels,12 they would, likewise, be unable to procreate with women. Some apocryphal books, such as the book of Enoch13 and book of Jubilees,14 indicate that the Nephilim were fallen angels. However, these books make some outrageous claims, saying that the giants were 450 feet tall!13
Conclusion
Since the Bible indicates that angels are asexual beings, i
t makes sense that they could not be the "sons of God" who produced children with the "daughters of men." The best interpretation is that the "sons of God"
were men who were descended from Seth, who followed the Lord for a time (in contrast to the line of Cain, which produced the "daughters of men").15
However, right before the flood, even the "sons of God" took wives among the line of Cain, and, therefore, became corrupted themselves through their unbelieving wives.
This is one of the reasons God determined to destroy the entire human race, except for the eight people who still followed the Lord (Noah and his extended family).
Genesis 6 also describes the Nephilim, who were the corrupt strongmen of their time, notorious for their violent exploits (
Genesis 6:4).
These men were probably also descendents of Cain, who were terrorizing the peoples and represented at least part of the group whose thoughts were "only evil continually." The Nephilim that were described after the flood were also evil strongmen, but not related to those pre-flood people, since they were all destroyed in the flood.
• Now there was a day when the sons of God came to present themselves before the LORD, and Satan also came among them. (
Job 1:6)
Again there was a day when the sons of God came to present themselves before the LORD, and Satan also came among them to present himself before the LORD. (
Job 2:1)
• When the morning stars sang together And all the sons of God shouted for joy? (
Job 38:7)
• "Blessed are the peacemakers, for they shall be called sons of God. (
Matthew 5:9)
for neither can they die anymore, for they are like angels, and are sons of God, being sons of the resurrection. (
Luke 20:36)
For all who are being led by the Spirit of God, these are sons of God. (
Romans 8:14)
For the anxious longing of the creation waits eagerly for the revealing of the sons of God. (
Romans 8:19)
For you are all sons of God through faith in Christ Jesus. (
Galatians 3:26)
• "There also we saw the Nephilim (the sons of Anak are part of the Nephilim); and we became like grasshoppers in our own sight, and so we were in their sight." (
Numbers 13:33)
• When they had gone up into the Negev, they came to Hebron where Ahiman, Sheshai and Talmai, the descendants of Anak were. (Now Hebron was built seven years before Zoan in Egypt.) (
Numbers 13:22)
"Nevertheless, the people who live in the land are strong, and the cities are fortified and very large; and moreover, we saw the descendants of Anak there. (
Numbers 13:28)
a people great and tall, the sons of the Anakim, whom you know and of whom you have heard it said, 'Who can stand before the sons of Anak?' (
Deuteronomy 9:2)
Now he gave to Caleb the son of Jephunneh a portion among the sons of Judah, according to the command of the LORD to Joshua, namely, Kiriath-arba, Arba being the father of Anak (that is, Hebron). (
Joshua 15:13)
And Caleb drove out from there the three sons of Anak: Sheshai and Ahiman and Talmai, the children of Anak. (
Joshua 15:14)
• "For as in those days which were before the flood they were eating and drinking, they were marrying and giving in marriage, until the day that Noah entered the ark, and they did not understand until the flood came and took them all away; so shall the coming of the Son of Man be. (
Matthew 24:38-39)
they were eating, they were drinking, they were marrying, they were being given in marriage, until the day that Noah entered the ark, and the flood came and destroyed them all. (
Luke 17:27)
By faith Noah, being warned by God about things not yet seen, in reverence prepared an ark for the salvation of his household, by which he condemned the world, and became an heir of the righteousness which is according to faith. (
Hebrews 11:7)
who once were disobedient, when the patience of God kept waiting in the days of Noah, during the construction of the ark, in which a few, that is, eight persons, were brought safely through the water. (
1 Peter 3:20)
and did not spare the ancient world, but preserved Noah, a preacher of righteousness, with seven others, when He brought a flood upon the world of the ungodly; (
2 Peter 2:5)
• And angels who did not keep their own domain, but abandoned their proper abode, He has kept in eternal bonds under darkness for the judgment of the great day, (
Jude 1:6)
For if God did not spare angels when they sinned, but cast them into hell and committed them to pits of darkness, reserved for judgment; (
2 Peter 2:4)
• On that day some Sadducees (who say there is no resurrection) came to Him and questioned Him, saying, "Teacher, Moses said, 'IF A MAN DIES, HAVING NO CHILDREN, HIS BROTHER AS NEXT OF KIN SHALL MARRY HIS WIFE, AND RAISE UP AN OFFSPRING TO HIS BROTHER.'
"Now there were seven brothers with us; and the first married and died, and having no offspring left his wife to his brother; so also the second, and the third, down to the seventh. "And last of all, the woman died. "In the resurrection therefore whose wife of the seven shall she be? For they all had her." But Jesus answered and said to them, "You are mistaken, not understanding the Scriptures, or the power of God. "For in the resurrection they neither marry, nor are given in marriage, but are like angels in heaven. (
Matthew 22:23-30)
•
Lamech said to his wives, "Adah and Zillah, Listen to my voice, You wives of Lamech, Give heed to my speech, For I have killed a man for wounding me; And a boy for striking me; If Cain is avenged sevenfold, Then Lamech seventy-sevenfold." (
Genesis 4:23-24)