I’ll stick with Dr. John Whitcomb’s analysis on the subject which I believe is more in line with the totality of all scriptures. Demonically possessed men. See Genesis 1 to 11 studies 6 and 7 below.
http://www.voicesforchrist.org/welcome/search?utf8=%E2%9C%93&q=John+Whitcomb
Then would demonically possessed men be called "sons of God?"
Rather, what if the expression "son of God" in the Scriptures refers to individually and directly created beings?
I was not a son of God until, in December of 1977, God created me after the image of Christ as part of the New Birth, when He saved me. That new, individual creation, made me a son of God.
Adam was called "the son of God" as a direct creation of God (Luke 3:38), which reference has nothing to do with being born again or regenerated.