Revelation 12:7-9
 7 Then war broke out in heaven. Michael and his angels fought against the dragon, and the dragon and his angels fought back. 
 8 But he was not strong enough, and they lost their place in heaven. 
 9 The great dragon was hurled down—that ancient serpent called the devil, or Satan, who leads the whole world astray. He was hurled to the earth, and his angels with him.