Revelation 12:3 (King James Version)
3 And there appeared another wonder  in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
Revelation 12:4 (King James Version)
4 And his tail drew the third part of the stars of heaven, and did cast them to the earth: and the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born.
Revelation 12:7 (King James Version)
7 And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,
Revelation 12:9 (King James Version)
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.
Revelation 12:16 (King James Version)
16 And the earth helped the woman, and the earth opened her mouth, and swallowed up the flood which the dragon cast out of his mouth.
Revelation 12:17 (King James Version)
17 And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.
12:3 wonder: or, sign