Revelation 12:3, 7-9, 12
Revelation 12:3 NASB1995
Then another sign appeared in heaven: and behold, a great red dragon having seven heads and ten horns, and on his heads were seven diadems.
Revelation 12:12 NASB1995
For this reason, rejoice, O heavens and you who dwell in them. Woe to the earth and the sea, because the devil has come down to you, having great wrath, knowing that he has only a short time.”