As @Codosaur Pointed out, Satan is a character that rises up against the supreme deity of the mythology. I would add that in the Christian religion, he comes by many names I'll start a list here and we'll try to explain some of their signification:
- Lord of the underworld / Lord of Hell / Lord of this World:
Satan is supposed to rule over hell, so the afterlife of the "bad guys", he was put in this role after rebelling against God, it doesn't mean he wants to do it as the Lucifer TV-shows (That I advise you to watch)
- Lucifer / The Morning Star: {Latin}
Often portrayed as a beautiful archangel and the bringer of light, the illuminator
- Mephistopheles: {German}
Which Etymology seems to come from: "scatterer, disperser", "plasterer of lies", "light", "philis" meaning "loving" maybe meaning "not-light-loving", it is seen as a parody of Lucifer but I'll mostly just remember it as Lucifer plus a touch of "scatterer of light".
After theses explanations about some of the names that are attributed to Satan, I want to point out the part where he is supposed to:
- Rebel against the supreme God
- Scatters the light
- Be the ruler of the afterlife (Mostly the punishing part)
Prometheus, before 800BCE
The titan god of forethought and crafty counsel created the humans on Zeus order. He then tried to improve their life by all means. One of those means implied giving the fire to the humans, this can be seen as the bringer of light (1st point). Doing this angered Zeus, the supreme deity (2nd point).
The timeline here is this one, which states the first records 8th century BCE, thanks @DukeZhou for the correction:
Then I found out about the Japanese creation myth, where we can find two primordial gods:
Izanagi and Izanami, ~700BCE
Which share the characteristics of Satan that I described earlier mixed with those of a supreme God. They are the creator of everything (Japan), keep in mind the fire creating (1st point):
Izanagi and Izanami then created gods and goddesses of the trees, mountains, valleys, streams, winds, and other natural features of Japan. While giving birth to the fire god Kagutsuchi, Izanami was badly burned. As she lay dying, she produced more gods and goddesses. Other deities emerged from the tears of her grief-stricken husband.
Izanagi angered Izanami a bit after her death (2nd point) and after this episode Izanami became the ruler of the Underworld (3rd point):
When Izanami died, she went to Yomi-tsu Kuni, the land of darkness and death. Izanagi followed her there and tried to bring her back. But Izanami's body had already begun to decay, and she hid in the shadows and told Izanagi that she could not leave. Izanagi could not resist looking at his beloved wife one last time. When he lit a torch and saw her rotting corpse, he fled in terror. Angry that Izanagi had seen her, Izanami sent hideous spirits to chase him. Izanagi managed to escape, and he sealed off the passage to Yomi-tsu Kuni with a huge boulder. Izanami remained there and ruled over the dead.
On the Wikipedia page about this story, we can read that they are both infuriated against each other, so we can give all the credit of being the "Satan" of this religion to Izanami:
Izanagi burst through the entrance and quickly pushed a boulder to the entrance of Yomi. Izanami screamed from behind this barricade and told Izanagi that, if he left her, she would destroy 1,000 living people every day. He furiously replied that he would give life to 1,500.
For the period where those myth were created, I didn't find something more precise about the oral sharing(1, 2):
The myths of Japanese popular religion derive from oral traditions codified for posterity in two books: the Nihon Shoki, published in 720 CE and the Kojiki written by an official of the Empress Gemmyo between 708 and 714 CE. An additional source, the Kogoshui was written in c. 807 CE by Imibe-no-Hironari who collected together oral traditions omitted from the Nihon Shoki and Kojiki.
Community Wiki
If someone wants to add a contribution to this, try to keep the original format. I'm also open to its format improvement, based on suggestions.