'Mighty Angel' in the Bible

And I saw another mighty angel coming down from heaven, clothed with a cloud; and the rainbow was upon his head, and his face was like the sun, and his feet like pillars of fire.

And a mighty angel took up a stone like a great millstone, and threw it into the sea, saying: Thus, with violence shall Babylon, that great city, be thrown down, and shall be found no more at all.