Well, it was just a term as God being the author of the angels used only a few times in the OT that Angels were refereed to as the sons of God. The reference as you know was not denoting actual children but God being the source, creator (Father of something) the angels.
Being that the word angel is interpreted "Messenger", does it mean all messengers are created angels? Do you have scripture stating that a created angel is referred to as a son of God? Thanks.
1 Now it came to pass, when men began to multiply on the face of the earth, and daughters were born to them, 2 that
the sons of God saw the daughters of men, that they were beautiful; and they took wives for themselves of all whom they chose. 3 And the Lord said, "My Spirit shall not strive with man forever, for he is indeed flesh; yet his days shall be one hundred and twenty years." 4 There were giants 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.
Genesis 6:1-4
Sons of God is a reference to angels.
4 For
if God did not spare the angels who sinned, but cast them down to hell and delivered them into chains of darkness, to be reserved for judgment; 5 and did not spare
the ancient world, but saved Noah, one of eight people, a preacher of righteousness, bringing in the flood on the world of the ungodly;
2 Peter 2:4-5
and again -
18 For Christ also suffered once for sins, the just for the unjust, that He might bring us to God, being put to death in the flesh but made alive by the Spirit, 19 by whom also He went and
preached to the spirits in prison, 20
who formerly were disobedient, when once the Divine longsuffering waited in the days of Noah, while the ark was being prepared, in which a few, that is, eight souls, were saved through water. 1 Peter 3:18-20
and again -
Note the context here. Saved His people out of Egypt, then later destroyed WHO DIDN'T BELIEVE, [which means didn't obey].
Likened this very action to the angels who were disobedient and did not keep their proper domain,
but corrupted the seed of men.
5 But I want to remind you, though you once knew this, that the Lord,
having saved the people out of the land of Egypt, afterward destroyed those
who did not believe. 6 And
the angels who did not keep their proper domain, but left their own abode, He has reserved in everlasting chains under darkness for the judgment of the great day;
Jude 5-6
OSAS is as false a doctrine as there ever was!!!!
JLB