Who is the dragon that gave the wild beast with seven heads and ten horns his power, throne and authority?
NKJV (Revelation 12:3, 7-9) 3 And another sign appeared in heaven: behold, a great, fiery red dragon having seven heads and ten horns, and seven diadems on his heads….7 And war broke out in heaven: Michael and his angels fought with the dragon; and the dragon and his angels fought, 8 but they did not prevail, nor was a place found for them in heaven any longer. 9 So the great dragon was cast out, that serpent of old, called the Devil and Satan, who deceives the whole world; he was cast to the earth, and his angels were cast out with him.
The great fiery-colored dragon appears to be Satan. (Rev. 12:9). This great fiery-colored dragon also has seven heads and ten horns. From the above it turns out, that the seven heads propose political powers. Satan can give throne and great authority to whom he will according to Revelation 13:2. So, behind the scenes, he is the real ruler.
NKJV (Revelation 13:2) 2 Now the beast which I saw was like a leopard, his feet were like the feet of a bear, and his mouth like the mouth of a lion. The dragon gave him his power, his throne, and great authority.
This power of Satan is reflected in the offering of him to Jesus, in Matthew 4:8,9;
NKJV (Matthew 4: 8,9) 8 Again, the devil took Him up on an exceedingly high mountain, and showed Him all the kingdoms of the world and their glory. 9 And he said to Him, “All these things I will give You if You will fall down and worship me.”
Read more at: 6. The origin of the wild beast with two horns