'Mighty Angel' in the Bible

and to give rest to you who are being crushed with sorrows, along with us, at the unveiling of our Lord Jesus Christ from heaven, with His mighty angels

And I saw a mighty angel announcing in a loud voice, "Who deserves to open the book and break its seals?"

Then I saw another mighty angel coming down from heaven. He was clothed in a cloud, with a rainbow over his head; his face was like the sun, his legs were like pillars of fire,

Then a mighty angel picked up a stone like a huge millstone and hurled it into the sea, saying: "With violence like this, Babylon the great city will be hurled to ruin, and it will never be found again.