Most people do not realize that the fallen angels will be coming back, when Satan is loosed a short period to tempt mankind. What will they be doing? What does scripture say about them? They are coming to pervert and tempt us. Let's look into scripture.
Genesis 6:1-2 - “Now it came to pass, when men began to multiply on the face of the earth, and daughters were born to them, 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.” **The fallen angels left their place of habitation and tried to pervert what God had created. They were giving and taking in marriages that were an abomination to God.
3-4 “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.” 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.” **God was angry, hurt and disgusted by this act of sexual immorality and perversion.
5-8 - “Then the Lord saw that the wickedness of man was great in the earth, and that every intent of the thoughts of his heart was only evil continually. And the Lord was sorry that He had made man on the earth, and He was grieved in His heart. So the Lord said, “I will destroy man whom I have created from the face of the earth, both man and beast, creeping thing and birds of the air, for I am sorry that I have made them.” But Noah found grace in the eyes of the Lord.
Why did God favor Noah? Because his family was pure the way God intended, they had not mixed with the fallen angels:
9 “This is the genealogy of Noah. Noah was a just man, perfect in his generations. Noah walked with God.”
Matthew 24:36-39 - “But of that day and hour no one knows, not even the angels of heaven, but My Father only. But as the days of Noah were, so also will the coming of the Son of Man be. For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark, and did not know until the flood came and took them all away, so also will the coming of the Son of Man be.” **Jesus is discussing how it is going to be when Satan comes claiming to be Christ and fooling the world. If we look at Genesis 6 who was it that this verses is talking about: “they were eating and drinking, marrying and giving in marriage”? That would be the fallen angels.
1 Corinthians 11:10- “For this reason the woman ought to have a symbol of authority on her head, because of the angels.” **Here we see that the angels will be coming back and God wants women to be protected from them by men.
The angels are in serious trouble when they go against God, in fact they will be judged and sentenced too. Do you remember when Jesus discusses His return and His judgment of the nations when He comes back? What did He say? (Matthew 25:41) “Then He will also say to those on the left hand, ‘Depart from Me, you cursed, into the everlasting fire prepared for the devil and his angels.”
So, we see that the fallen angels, also known throughout scripture as the sons of God, will be coming back with Satan to again pervert mankind and pollute what God has created. Don't be deceived and take part in their perversions if you wish to escape the fire of hell.