Eschatology: The Second Coming of Christ: Judgment of Fallen Angels.

1Co 6:3  Do you not know that we are to judge angels? How much more, then, matters pertaining to this life!

All fallen angels are included in this judgment. There may be two categories: Chained and Unchained.

1. Unchained Fallen Angels.

Luk 8:30  Jesus then asked him, "What is your name?" And he said, "Legion," for many demons had entered him.

Luk 8:31  And they begged him not to command them to depart into the abyss.

Eph 6:12  For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.

These fallen angels (demons) have free movement and can posses both men and animals. Their main sin was following Satan in his wicked rebellion against God.

See Isaiah 14:12-17 and also Ezekiel 28 :12-19

b. Chained fallen Angels.

1Pe 3:18  For Christ also suffered once for sins, the righteous for the unrighteous, that he might bring us to God, being put to death in the flesh but made alive in the spirit,

1Pe 3:19  in which he went and proclaimed to the spirits in prison,

1Pe 3:20  because they formerly did not obey, when God's patience waited in the days of Noah, while the ark was being prepared, in which a few, that is, eight persons, were brought safely through water.

2Pe 2:4  For if God did not spare angels when they sinned, but cast them into hell and committed them to chains of gloomy darkness to be kept until the judgment;

Jud 1:6  And the angels who did not stay within their own position of authority, but left their proper dwelling, he has kept in eternal chains under gloomy darkness until the judgment of the great day—

According to these passages these fallen angels do not have freedom that the previous angels have. They are right now in “solitary confinement:” They are awaiting the Judgment at the end of the Tribulation.

Why the difference?

Many believe that this group were guilty of two grievous sins - not only did they join in Satan’s revolt, but they also committed sexual perversion. “with the daughters of men. Willmington p.851

I do not believe that this is possible as jesus said that angels neither marry nor are given in marriage. They have no sexual relations.

Mat_22:30  For in the resurrection they neither marry nor are given in marriage, but are like angels in heaven.

Mar_12:25  For when they rise from the dead, they neither marry nor are given in marriage, but are like angels in heaven.

Those in Genesis 6:2 are the line of Seth “the sons of God”.