Revelation 12:9-11 (KJV)

⁹ And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.

¹⁰ And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.

¹¹ And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.