This great dragon -- the ancient serpent called the Devil, or Satan, the one deceiving the whole world -- was thrown down to the earth with all his angels.
Then I heard a loud voice shouting across the heavens, "It has happened at last -- the salvation and power and kingdom of our God, and the authority of his Christ! For the Accuser has been thrown down to earth -- the one who accused our brothers and sisters before our God day and night.
References for Revelation 12:10
And they have defeated him because of the blood of the Lamb and because of their testimony. And they were not afraid to die.