9 Bible Verses about Angels Activities Among Unbelievers

Then I saw another angel flying in midheaven, having an eternal gospel to proclaim to those who live on the earth, and to every nation and tribe and tongue and people; and he said with a loud voice, "Fear God, and give him glory, because the hour of his judgment has come; worship him who made the heaven and the earth and sea and springs of water." And another angel, a second, followed, saying, "Fallen, fallen is Babylon the great, she who made all the nations drink the wine of her impure passion."read more.
And another angel, a third, followed them, saying with a loud voice, "If any one worships the beast and its image, and receives a mark on his forehead or on his hand, he also will drink of the wine of God's wrath, which is poured in full strength into the cup of his anger, and he will be tormented with fire and sulfur in the presence of the holy angels and in the presence of the Lamb.

The Son of Man will send out his angels, and they will gather out of his kingdom everything that causes sin and all who do evil, and will throw them into the furnace of fire, where there will be weeping and gnashing of teeth.

Immediately an angel of the Lord struck him because he did not give God the glory, and he was eaten by worms and died.

For this very night an angel of the God to whom I belong and whom I serve stood before me, and he said, 'Do not be afraid, Paul; you must stand before Caesar; and behold, God has granted you all those who sail with you.'

After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth, that no wind would blow on the earth or the sea or on any tree. Then I saw another angel ascend from the rising of the sun, having the seal of the living God, and he called out with a loud voice to the four angels who had been given power to harm the earth and sea,

And the four angels, who had been held ready for the hour and day and month and year, were released to kill a third of mankind.

Then I saw another sign in heaven, great and marvelous, seven angels with seven plagues, which are the last, because with them the wrath of God is finished.

But an angel of the Lord said to Philip, "Get up and go toward the south to the road that goes down from Jerusalem to Gaza." This is a desert road. So he got up and went. And there was an Ethiopian eunuch, a court official of Candace, queen of the Ethiopians, who was in charge of all her treasure; and he had come to Jerusalem to worship, and he was returning and sitting in his chariot, and was reading the prophet Isaiah.read more.
And the Spirit said to Philip, "Go up and join this chariot." So Philip ran up to him, and heard him reading Isaiah the prophet, and asked, "Do you understand what you are reading?" And he said, "How can I, unless someone guides me?" And he invited Philip to come up and sit with him. Now the passage of Scripture which he was reading was this: "He was led as a sheep to slaughter; and as a lamb before its shearer is silent, so he does not open his mouth. In his humiliation justice was denied him. Who can describe his generation? For his life is taken up from the earth." And the eunuch said to Philip, "Please tell me, of whom does the prophet say this, about himself or about someone else?" Then Philip opened his mouth, and beginning with this scripture he told him the good news of Jesus. And as they went along the road they came to some water; and the eunuch said, "Look, here is water! What prevents me from being baptized?" (...) And he commanded the chariot to stop, and they both went down into the water, Philip and the eunuch, and he baptized him. And when they came up out of the water, the Spirit of the Lord snatched Philip away; and the eunuch saw him no more, but went on his way rejoicing.

I tell you that in the same way there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance.