Revelation 12:3-4, 7-12

And then another Sign alongside the first: a huge and fiery Dragon! It had seven heads and ten horns, a crown on each of the seven heads. With one flick of its tail it knocked a third of the Stars from the sky and dumped them on earth. The Dragon crouched before the Woman in childbirth, poised to eat up the Child when it came.

War broke out in Heaven. Michael and his Angels fought the Dragon. The Dragon and his Angels fought back, but were no match for Michael. They were cleared out of Heaven, not a sign of them left. The great Dragon—ancient Serpent, the one called Devil and Satan, the one who led the whole earth astray—thrown out, and all his Angels thrown out with him, thrown down to earth. Then I heard a strong voice out of Heaven saying, Salvation and power are established! Kingdom of our God, authority of his Messiah! The Accuser of our brothers and sisters thrown out, who accused them day and night before God. They defeated him through the blood of the Lamb and the bold word of their witness. They weren’t in love with themselves; they were willing to die for Christ. So rejoice, O Heavens, and all who live there, but doom to earth and sea, For the Devil’s come down on you with both feet; he’s had a great fall; He’s wild and raging with anger; he hasn’t much time and he knows it.