And behold a great red dragon — His fiery — red colour denoting his disposition. Having seven heads — Implying vast wisdom. And ten horns — Perhaps on the seventh head; emblems of mighty power and strength, which he still retained. And seven diadems on his heads — Not properly crowns, but costly bindings, such as kings anciently wore; for, though fallen, he was a great potentate still, even "the prince of this world."
Related Commentaries of Revelation 12:3
Revelation 12:3
3 And there appeared another wonderb in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.