Scripture refers to God’s elect (Mt 24:31), those whom He has chosen: some angels (1Ti 5:21), as well as a few people. (Co 3:12) Why would God refer to certain angels and people as elect? What does this imply?
The saints are elect unto obedience (1Pe 1:2), chosen before the foundation of the world (Ep 1:4) to submit to God and walk with Him, so it seems reasonable the angels are chosen similarly.
Evidently, those whom God doesn’t choose rebel against Him. along with Satan, and are now at war with God, both humans (Ps 2:1-3) and angels. (Re 12:7)
This non-elect group of rebels evidently comprises nearly all people (1Jn 5:19), a full third of the angels, who chose to remain in Heaven after they rebelled (Re 12:4), along with a number of angels who’ve been chained up for leaving their Heavenly habitation (Ju 6), evidently to intermarry with humans (Ge 6:1-2), corrupt the human race (12), and prevent the Messianic prophecy from being fulfilled. (Ge 3:15)
As a particular showcase example, this ante-diluvian human-angelic mutiny, as it played out prior to the Great Flood, was so effective and pervasive God evidently had to step in and intervene to keep even a single strand of humanity intact (Ge 6:9), preserving a purely human ancestry through which to bring Messiah, destroying all the rest of humanity, most all animal life (Ge 6:13), and starting over, constraining such destructive angelic behavior going onward.
What is impressive (at least to me) about this overwhelming level of depravity, as it persists in both the angelic realm since the Creation week, as well as in humanity since the Fall, particularly as showcased in the ante-diluvian period, is that it apparently occurs even with full knowledge of the Godhead. Satan is so effective in his ability to deceive, he is able to win over anyone and everyone whom God has not graciously enabled to resist (Mt 24:24), even if we’re fully aware of the existence, holiness and omnipotence of God.
That Satan’s ability to deceive is not merely a testament to inherent human or angelic depravity, but evidence of the profound appeal, intelligence and subtlety of Satan (Ez 28:14-15), consider that Eve was enticed by Satan in Paradise when she had no need, trouble or discomfort, no reason to betray God, and did not have a depraved nature. And the angels who sided with Satan evidently did so in plain sight of God, without an inherently evil nature. (For, if God created fallen angels as inherently evil, or with an involuntary predisposition to evil, it is difficult to imagine how they would be culpable for acting out their God-given design.)
The implication is that every sentient, conscious being with the ability to make a moral choice has willingly chosen to depart from God at the first opportunity, even when bathed in the full knowledge of the glory, majesty and power of Almighty Godhead, unless God mercifully intervenes and restrains us. And also, that God has mysteriously chosen to intervene only in extremely few cases. (Mt 7:14)
Both of these mysteries should humble us, and fill us with joy unspeakable for the incredible mercies of God (Ps 103:11), those He has given the grace to believe on Him and follow Him. (Mt 19:25-16) We are precious few in number (Ro 11:5), and no better than the lost when left to our own devices. (Ga 6:3)
It should not surprise us when others do not receive the truth (2Ti 4:3-4), turning against it and against us, even when the truth is stated as clearly, plainly and lovingly as it can possibly be stated. Truly, no flesh shall glory in His presence. (1Co 1:29)