Sons of God are Humans.

...and a pretty awesome name of a Hebrew Biker gang. 

This post will spend a little bit on Genesis 6 and the context of the sons of God relation to the Daughters of Men and the Nephilim, but it is primarily a study on who the sons of God are. After reading the Genesis 6 account and seeing that I believe the term "Sons of God" a reference to humans of obedience, I went and I listed every occurrence that I could find the term in scripture. I have found that every instance as listed below can and likely should, refer to humans. Especially due to the law of first mention.  This started in Genesis 6, where the previous chapter lists a specific class of the lineage of Adam and how God is marked as the foremost of the lineage of Adam. One way to say that would be that Adam, was a son of God. I see that the start of Genesis 5 parallels what we see in the lineage of Yeshua  the Messiah

This is the book of the generations of Adam. On the day when God created man, He made him in the likeness of God. 2 He created them male and female, and He blessed them and named them “mankind” on the day when they were created. - Gen 5

 

  the son of Enosh, the son of Seth, the son of Adam, the son of God- Luke 3:38

The scripture that is controversial is the passage of Gen 6 which states as follows:

That the sons of God saw that the daughters of mankind were beautiful; and they took wives for themselves, whomever they chose. 3 Then the Lord said, “My Spirit will not remain with man forever, because he is also flesh; nevertheless his days shall be 120 years.” 4 The Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of mankind, and they bore children to them. Those were the mighty men who were of old, men of renown.- Gen 6

There are some that render sons of God in the text to mean angels, instead of what I believe would be more accurately appropriate as a classification of righteous decedents that were beginning to stray from the righteous walk.  I believe that we can see in Genesis 4 the fallen men starting with Cain, and his sons. Genesis 5 being a classification of sons that were walking upright. Genesis 6 shows that those walking upright began to marry those that were from the camp of fallen men on the basis of their beauty.  We know that there was a sacrifice or offering in place from Genesis 4 where God warned Cain of his anger and that his face was Fallen 

So I'm looking at a thing in Genesis right, and I note that the primitive root for Nephilim:
From נָפַל (H5307) Variant spellings for this word: נפיל (Strongs and Gesenius) נפל (Strongs)

is 

H5307 - nāp̄al naw-fal' נָפַל nâphal, naw-fal'; a primitive root; to fall, in a great variety of applications (intransitive or causative, literal or figurative):—be accepted, cast (down, self, (lots), out), cease, die, divide (by lot), (let) fail, (cause to, let, make, ready to) fall (away, down, -en, -ing), fell(-ing), fugitive, have (inheritance), inferior, be judged (by mistake for 6419), lay (along), (cause to) lie down, light (down), be ( hast) lost, lying, overthrow, overwhelm, perish, present(-ed, -ing), (make to) rot, slay, smite out,  surely, throw down.

And this second one, is where God says
Then the Lord said to Cain, “Why are you angry? And why is your face Naphal?

 Behold, You have driven me this day from the face of the ground; and I will be hidden from Your face, and I will be a wanderer and a drifter on the earth, and whoever finds me will kill me.” 15 So the Lord said to him, “Therefore whoever kills Cain, vengeance will be taken on him seven times as much.” And the Lord placed a mark on Cain, so that no one finding him would kill him.

16 Then Cain left the presence of the Lord, and settled in the land of Nod, east of Eden.

The connection of Nephilim and God pointing to Cains face as fallen may seem coincidental at first, unless we factor in that Cain and his sons were men of violence, and the Nephilim caused violence. 
Cain had left the presence of the Lord.  From Adam you have sons of God and Cain who left the presence of the Lord.  If there is a tribe headed by the original murderer, who is renowned in history for being one that takes life, the text shows that his child(ren)  follow suit it stands to reason that violence is a defining feature for that group.  
When we see these sons of God( from righteous classification of men)- taking actual wives the daughters of men (pagan/ polygamist group) we can safely conclude that it resulted in violence, if it were a matter of angels entering into a covenant of marriage that would violate that Yeshua says it doesn't happen. We see Men, taking women, in a time where there were men of violence and murder, who were before and after the flood.  If the flood was to eradicate a race of angel half breed human experiments, then why would Noah be allowed to preach for them to join on the Ark? 

For if God did not spare angels when they sinned, but cast them into hell and committed them to pits of darkness, held for judgment; 5 and did not spare the ancient world, but protected Noah, a preacher of righteousness, with seven others, when He brought a flood upon the world of the ungodly- 2 Peter 2 

What we find in Gen 6 is that God is grieved with Man, and then God limits the life of Man, and then God destroys the world because of the violence of Men. There is nothing in the text to suggest that angels fit better.  Furthermore if we look at that passage in 2 Peter chapter 2, it states that fallen angels were cast into hell, pits of darkness held for judgement, not cast to earth and allowed to willfully enter into covenant of marriage with women after developing the physical anatomy to be able to do so. 
A camp of men who kill and take what they want fits context better to explain why Abraham journeyed to what would be his distant cousins and told his wife to pretend that she's his sister for fear that he'd be murdered and they take her. 

moving on. 

 “You are sons of the Lord your God; you shall not cut yourselves nor shave a bald spot above your forehead for the dead. For you are a holy people to the Lord your God, and the Lord has chosen you to be a people for His personal possession out of all the peoples who are on the face of the earth.- Deut 14:1-2

I think this is pretty clear that its not referencing Angels. Some might argue that this is not using a very specific "B'nei Elohim"  but it is saying Ben Yehova Elohim which renders that argument even useless seeing as this is a greater context. 

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

I have linked these two together because the same point stands for both of them. The word angel is not used here. There is no reason for us to insert it here. We see that that these sons of God came to present themselves before God, and Satan also came.  We read in 2 Peter 2 that the fallen angels were held in a pit in darkness awaiting judgement so why would they be called sons of God any way? Cain in his rebellion did not retain such a title. There is no reason to believe that this passage is referring to angels. So what is it referring to? I say its referring to obedient faithful humans. 

“Three times a year all your males shall appear before the LORD your God at the place which He chooses: at the Feast of Unleavened Bread, at the Feast of Weeks, and at the Feast of Booths; and they are not to appear before the LORD empty-handed. - Deut 16:16

The call of righteous men coming at an appointed time and the specific significance of Satan coming at the appointed time to afflict someone does not make humans become Angels. 

When the morning stars sang together And all the sons of God shouted for joy?- Job 38:7

This is one that gets leaned on fairly heavily by those that support that Gen 6 is talking about angels being the sons of God. They state that sons of God means angels , because stars could mean angels, and this has the stars and sons side by side.  One of several problems with this is that angels isn't in the text, and that is making several leaps and assumptions in order to make a case that is logically inconsistent with the rest of the chapter and other passages. Lets break this down with two points. 1 this is from a chapter of imagery and great sarcasm on behalf of God to really drive His point home with Job and put Job in check.  If we are to take this passage as literal then here are other passages that we have to do the same thing with from the same passage:

We have to figure out when exactly it was that Job walked along the bottom of the ocean and was hanging out under the sea:

“Have you entered the springs of the sea,

And walked in the depth of the ocean?

We have to determine that there is a literal actual storehouse where God keeps all His snow and ice 

Have you entered the storehouses of the snow,

And have you seen the storehouses of the hail

 And this:

 “Where is the way to the dwelling of light?

And darkness, where is its place,

20 That you would take it to its territory,

And discern the paths to its home?

21 You know, for you were born then,

And the number of your days is great!

If we are to take this passage as literal, then we must deduce that God is actually mad at Job not for being self righteous and taking issue with the sovereignty of God as the rest of the book shows, but instead craft a doctrine where God is mad at this immortal Job who has lived forever and just forgotten how creation actually unfolded. This is not how we should study these things. This is a common mistake. I mentioned that there were 2 points, one was showing from the same chapter the errors of saying that stars and sons of God singing means angels. Lets look at the entirety of Psalms 148 as it pertains to rendering Job 38: 7 

Praise the Lord!

Praise the Lord from the heavens;

Praise Him in the heights!

2 Praise Him, all His angels;

Praise Him, all His heavenly armies!

3 Praise Him, sun and moon;

Praise Him, all stars of light!

4 Praise Him, highest heavens,

And the waters that are above the heavens!

5 They are to praise the name of the Lord,

For He commanded and they were created.

6 He has also established them forever and ever;

He has made a decree, and it will not pass away.

7 Praise the Lord from the earth,

Sea monsters, and all the ocean depths;

8 Fire and hail, snow and clouds;

Stormy wind, fulfilling His word;

9 Mountains and all hills;

Fruit trees and all cedars;

10 Animals and all cattle;

Crawling things and winged fowl;

11 Kings of the earth and all peoples;

Rulers and all judges of the earth;

12 Both young men and virgins;

Old men and children.

13 They are to praise the name of the Lord,

For His name alone is exalted;

His majesty is above earth and heaven.

14 And He has lifted up a horn for His people,

Praise for all His godly ones,

For the sons of Israel, a people near to Him.

Praise the Lord!

So to render Job 38:7 to mean angels even though it doesn't say angels- but other passages mention things that could be theorized as similar  things, if we were to go forward that way we must deduce that:

  Angels are :Sea monsters, ocean depths; Fire and hail, snow and clouds; Stormy wind, fulfilling His word; Mountains and all hills; Fruit trees and all cedars; armies; sun and moon; all stars of light; highest heavens, the waters that are above the heavens  Animals and all cattle; Crawling things and winged fowl; Kings of the earth and all peoples; Rulers and all judges of the earth;  Both young men and virgins; Old men and children.
....is there anything that angels aren't in this doctrine? Lets move on

“Blessed are the peacemakers, for they will be called sons of God.- Matthew 5:9

Faithful righteous people who are seekers of peace and not seekers of war or perpetuators of conflict, will be called sons of God. 

 Jesus said to them, “The sons of this age marry and the women are given in marriage, 35 but those who are considered worthy to attain to that age and the resurrection from the dead, neither marry nor are given in marriage; 36 for they cannot even die anymore, for they are like angels, and are sons of God, being sons of the resurrection. 37 But as for the fact that the dead are raised, even Moses revealed this in the passage about the burning bush, where he calls the Lord the God of Abraham, the God of Isaac, and the God of Jacob. - Luke 20

1.  The sons of this age- humans
2. Will be worthy to attain that age/ be Resurrected from the dead
3. Will not being given into marriage  like the angels, contrast with gen 6 sons of God took wives from the daughters of men. 
4. This is all in a response to marriage that we will be sons of God 

For all who are being led by the Spirit of God, these are sons and daughters of God.- Romans 8:14

Those being led by the Spirit of God will be sons and daughters (both) of God. Angels are spirit. Angels haven't a gender. 

For the eagerly awaiting creation waits for the revealing of the sons and daughters of God.- Romans 8:19

The time of Salvation where God will say to His people well done good and faithful servant. 

 as He also says in Hosea: “I will call those who were not My people, ‘My people,’
And her who was not beloved, ‘beloved.’”26 “And it shall be that in the place where it was said to them, ‘you are not My people,’ There they shall be called sons of the living God.”27 Isaiah cries out concerning Israel, “Though the number of the sons of Israel may be like the sand of the sea, only the remnant will be saved; - Romans 9:25-27

Romans 9 is stating that the sons of God (and Daughters) are the Remnant. There has always been a remnant of God and that they are People, not angels 

For you are all sons and daughters of God through faith in Christ Jesus.- Galatians 3:26

Short, Simple Concise. 

Because you are sons, God has sent the Spirit of His Son into our hearts, crying out, “Abba! Father!” - Galatians 4:6

The conclusion is clear. Nowhere does Sons of God say angels and in several places over and over again sons of God (and Daughters of God) are humans.