Revelation 12:7-11

Then a terrible war broke out in heaven. Michael and his angels fought against the great dragon. The dragon and his angels fought back. But the dragon did not have the power to win and they could not regain their place in heaven. So the great dragon was thrown down once and for all. He was the serpent, the ancient snake called the devil, and Satan, who deceives the whole earth. He was cast down into the earth and his angels along with him. Then I heard a triumphant voice in heaven proclaiming: “Now salvation and power are set in place, and the kingdom reign of our God and the ruling authority of his Anointed One are established. For the accuser of our brothers and sisters, who relentlessly accused them day and night before our God, has now been defeated—cast out once and for all! They conquered him completely through the blood of the Lamb and the powerful word of his testimony. They triumphed because they did not love and cling to their own lives, even when faced with death.