9 Bible Verses about Angels Activities Among Unbelievers

Then I saw another angel flying in mid-air, with eternal good news to tell to the inhabitants of the earth, to every nation, tribe, language, and people. He cried in a loud voice, "Fear God and give Him glory, because the hour of His judgment has come. Worship Him who made heaven and earth and sea and the springs of water." Then a second angel followed, saying: "She has fallen! Mighty Babylon has fallen, who made all the nations drink the wine of vengeance due her immorality!"read more.
Then a third angel followed them, saying in a loud voice: "Whoever worships the wild beast and his statue and lets his mark be stamped on his forehead or on his hand, himself will have to drink the wine of God's vengeance, poured unmixed into the cup of His wrath, and be tortured with fire and brimstone before the eyes of the holy angels and the Lamb.

The Son of Man will send out His angels, and they will gather out of His kingdom all those who cause wrongdoing, and the wrongdoers, and will throw them into the furnace of torturing punishment; there they will wail and grind their teeth.

But the angel of the Lord at once struck him down, because he did not give the glory to God; he was eaten by worms, and so died.

For just last night an angel of God, to whom I belong and whom I serve, stood by my side and said, "Stop being afraid, Paul. You must stand before the Emperor; and listen! God has graciously given to you the lives of all who are sailing with you.'

After this I saw four angels standing at the four corners of the earth holding back the four winds of the earth, so that no wind should blow on the earth, the sea, or any tree. Then I saw another angel coming up from the east with the seal of the living God, and he cried out to the four angels who had the power to injure the earth and the sea:

Then the four angels that were kept in readiness for that hour and day and month and year were turned loose to kill one-third of mankind.

Then I saw another symbol in heaven, great and wonderful: seven angels bringing seven plagues which are to be the last, because with them God's wrath is completely expressed.

Now an angel of the Lord said to Philip, "Get up and go south by the road that leads from Jerusalem to Gaza; this is the desert road." So he got up and went. Now there was an Ethiopian official, a member of the court of Candace, queen of the Ethiopians, her chief treasurer, who had come to Jerusalem to worship, and now was on his way home. He was seated in his chariot, reading the prophet Isaiah.read more.
So the Spirit said to Philip, "Go up and join him in his chariot." Then Philip ran up and listened to him reading the prophet Isaiah, and he asked, "Do you understand what you are reading?" He answered, "How in the world could I, unless someone teaches me?" And he begged him to get up and sit with him. Now this was the passage of Scripture that he was reading: "Like a sheep He was led away to be slaughtered, and just as a lamb is dumb before its shearer, so He does not open His mouth. Justice was denied Him in His humiliation, who can tell of His times? For His life is removed from the earth." "Tell me, I pray, of whom is the prophet speaking," asked the official of Philip, "of himself or of someone else?" Then Philip opened his mouth, and starting from this passage, he told him the good news about Jesus. As they continued down the road, they came to some water, and the official said, "Look! here is some water! What is there to keep me from being baptized?" Omitted Text. So he ordered the chariot to stop, and Philip and the official both went down into the water, and Philip baptized him. When they came up out of the water, the Spirit of the Lord suddenly took Philip away; the official saw him no more, for he went on home rejoicing;

Just so, I tell you, there will be more joy in heaven over one sinful person who repents than over ninety-nine upright people who do not need any repentance.