Revelation 12:11-12

11Our brothers and sisters fought against him and they won. They could do this because of the death of the Lamb as a sacrifice. They continued to speak God's true message. They were also ready to die as God's servants. That is why they were able to win against Satan.

12So be happy, everyone who lives in heaven! But terrible trouble will happen to the earth and the sea. The Devil has come down to you now and he is very angry. He knows that he has only a short time to hurt people.’