Revelation 12:10-11

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.

 

The eviction of Satan from heaven is followed by a loud cry that God has triumphed over the evil one. It will be a glorious event because the “accuser” of Christians has finally been cast down.