Why would one believe that in Job, sons of God refers to angels, but in Genesis 6, sons of God refers to "fallen" angels?
Job is a Mashal in Jewish literature. This is similar to a Greek parable. However, a Mashal is much more than a parable in that the characters etc can be real or ficticious. In Jewish ideology, the intent of the story over rides the facts of the story.
As I stated earlier, most Jewish commentators who go with the line that gen 6 refers to fallen Angel's track back and tie into Lilith. You are more than welcome to go that route, but it wont happen on this forum if it's any more than reference material.
Jesus referred to Himself as The Son of man, which is a reference to a son of Adam.
I see it a little differently. Direct decendents of Adam where known as Sons of God. Aside from that, you were a son of man. Jesus is the new Adam., the first born over creation.
Free has already given reference to Israel being known as the son of God, and I would only add Exodus 4:23.
This is where I will have to respectfully disagree with you.
It is not only I you disagree with, but the Sages as well. If you choose to follow those who believe in Lilith, you may eventually find yourself also believing in those things.
If Adam would have remained sinless, like the example Jesus gave us, then I could believe
The image of God is sinless.
However as you know, a person who has a sin nature, can not reproduce a sinless offspring, which is why Jesus had to become flesh and die on the cross.
I don't buy into the doctrine of total depravity or the doctrine of the sin nature. God created man and he calls us good, for we are all in Adam. We all have freewill, which by nature allows us to be evil. We can do good, and we can do evil. We have a choice once we realize the difference.
Mary was not without sin. Jesus was the offspring of Mary, the daughter of men.
Since Adam and the fall, the only way to become a son of God is through faith in Jesus Christ.
For you are all sons of God through faith in Christ Jesus. Galatians 3:26
I believe scripture teaches us that Adam, created in Gods Image was Gods Son, and Adam's offspring was in the Image of Adam, which made them Sons of God.
Just as Adam had freewill to willfully be disobedient prior to the fall, his offspring also had freewill to be willfully disobedient. I believe they caused others to fall, for the sons of men looked up to them.
We know that we are sons and daughters of God through Jesus, and we share in His ressurectuon, even though we are also sons and daughters of men. We will die, but we will never see death.
Like Adam's offspring, we are sons and daughters of God, but this time through Jesus, who is God in the flesh. We can sin, just like Adam could prior to his fall. We also can fall, and we can even cause others to fall.