[Gen 6:1-2 NASB] 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.
Everywhere in the OT where the term Sons of God is mentioned it refers to a heavenly being.
- [Job 1:6 KJV] Now there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them.
- [Job 2:1 KJV] Again there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them to present himself before the LORD.
- [Job 38:7 KJV] When the morning stars sang together, and all the sons of God shouted for joy?
- [Dan 3:25 KJV] He answered and said, Lo, I see four men loose, walking in the midst of the fire, and they have no hurt; and the form of the fourth is like the Son of God.
- [Rom 8:14 KJV] For as many as are led by the Spirit of God, they are the sons of God.
- [Rom 8:19 KJV] For the earnest expectation of the creature waiteth for the manifestation of the sons of God.
- [Phl 2:15 KJV] That ye may be blameless and harmless, the sons of God, without rebuke, in the midst of a crooked and perverse nation, among whom ye shine as lights in the world;
- [1Jo 3:1 KJV] Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
- [1Jo 3:2 KJV] Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.