Matthew 13:49-50

So shall it be in the end of the age: the angels shall come forth and separate the wicked from among the just,

Acts 12:23

And immediately an angel of the Lord smote him, because he did not give God the glory. And having been eaten by worms, he expired.

Revelation 6:15-16

and the kings of the earth, and the great men, and the officers, and the rich men, and the mighty men, and every bondman, and every freeman, hid themselves in the caves, and in the rocks of the mountains,

Revelation 19:17-18

And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the birds that fly in mid-heaven. Come, gather yourselves to the great supper of God,

Treasury of Scripture Knowledge

Summary

And the LORD sent an angel, which cut off all the mighty men of valour, and the leaders and captains in the camp of the king of Assyria. So he returned with shame of face to his own land. And when he was come into the house of his god, they that came forth of his own bowels slew him there with the sword.

Bible References

Angel

Matthew 13:49
So shall it be in the end of the age: the angels shall come forth and separate the wicked from among the just,
Acts 12:23
And immediately an angel of the Lord smote him, because he did not give God the glory. And having been eaten by worms, he expired.

The leaders

Revelation 6:15
and the kings of the earth, and the great men, and the officers, and the rich men, and the mighty men, and every bondman, and every freeman, hid themselves in the caves, and in the rocks of the mountains,
Revelation 19:17
And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the birds that fly in mid-heaven. Come, gather yourselves to the great supper of God,