Revelation Chapter 12. Here are some excerpts with commentary from https://discoverrevelation.com/revelation-chapter-12/
Verses 3-4: The “dragon” is identified as Satan (in verse 9). His “red” color shows his murderous character (compare John 8:44). His “seven heads” and “seven crowns” depict the completeness and universality of his power and influence (but compare Psalm 74:14). His “ten horns” show Satan’s connection with the fourth beast (of Daniel 7:7, 24), and with the Beast from the sea (in chapter 13:1-10 of Revelation). The “third part of the stars of heaven” are probably the fallen angels who followed Satan in his original rebellion against God (compare Isa. 14:12-15; Ezek. 28:12-16; 2 Peter 2:4; Jude 6). At the time of the birth of Christ, Satan was ready to kill Him (compare Matt. 2:13-18).
Revelation 12:3 “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.”
“Great red dragon”: The woman’s mortal enemy is Satan, who appears as a dragon 13 times in this book (compare verses 9; 20:2). Red speaks of bloodshed (compare John 8:44).
We see here this “red dragon”. This is the devil, and he is shown red all over to show his murderous and destructive personality. This is the only place in the New Testament that dragon is used. Here it is not a literal “dragon”, but a figure of Satan (see article “Satan”).
[–] 26394443? ago
This is just poor translation and interpretation. As you see, nowhere does it say that Satan was an angel, only the added commentary.
[–] 26394928? ago
That's why I didn't want to waste my time with you. The material is very clearly referencing other scripture that wasn't quoted. If you had read with honest eyes, and looked up the further scripture cited, you would know that I am right, you are wrong, and you just like to argue on the internet.