The original meaning of Hebrew is "Adverssary", which has been mentioned in some religious classics. Another view is that Satan is Lucifer of fallen angels.
In the Old Testament, Satan described it as follows:
Son of man, take up a lamentation for the king of Tyre and say, Thus says the Lord GOD: "You are well prepared, full of wisdom and completely beautiful.
In the Garden of Eden, you wear all kinds of precious stones, namely ruby, tourmaline, diamond, beryl, onyx, jasper,
Sapphire, emerald, ruby and gold; Fine drums and flutes are with you, all of which were prepared on the day you were created.
You are the cherubim anointed to cover the ark; I put you on the holy mountain of God; You are a jewel shining like fire.
From the day you were created, all your ways were perfect, and then injustice was found in you.
Because you traded a lot, you were full of violence and sin, so I expelled you from God's mountain because you desecrated the holy land.
I have destroyed you, O cherubim who covered the ark, from the burning stone.
Your heart is proud of your beauty, and your wisdom is corrupted by your glory. I threw you to the ground and made you fall before the king, so that they could see and see.
Because of your many sins and unfair trade, you desecrated your sanctuary. Therefore, I have sent a fire from among you, and it has consumed you.
So that you become ashes on the ground in front of all those who watch. "(Ezekiel chapter 28)
The origin and development of Satan
Judging from the similarity of early myths in different places, almost all the demons and fallen angels depicted in the Bible were directly inherited from other earlier mythological systems, or used after being vilified. For example, in the Bible system, Beelzebub, the king of hell, and Baal, the Lord God Solomon 72, two famous demons, were transformed after the death of Baal, the enemy of the only God.
The study of Satan's pronunciation of Satan shows that its pronunciation is very similar to the evil god "Seth" in Egyptian mythology. In Egyptian mythology, Seth was not an evil god at first, but was demonized as an evil god after the unification of upper and lower Egypt. After being vilified, Seth's image is a black dragon with terrible evil power. He killed Osiris, the father of the Lord God Horus. Eventually defeated by the grown-up Horus.
As can be seen from the Old Testament, Jews originally originated in Egypt. When the Jews fled the slavery of the Egyptians, Egypt was not yet unified. According to the traditional custom that Jews like to vilify the gods of other religions, Seth, who was not evil at that time, is likely to be absorbed into the Jewish system and become the messenger of God to test human beliefs.
At the same time, the image of Satan in Tana Sutra is an ancient snake (Gu Long), but before the Roman church wrote the New Testament, the image of Satan was not a demon. Satan in Job in the Old Testament, far from being an enemy of God, made a bet with God to test Job's confidence in God. Satan is also burdened with the crime of spying on mankind, and in the final judgment of the end of the world, he will report the crimes of mankind. Therefore, Satan has the image of "seducer" and "informer" at the same time, seducing mankind (such as seducing Adam and Eve to eat forbidden fruit and seducing Job), and also seducing mankind to commit crimes as the king of the devil. All this can be regarded as a test of human faith with the acquiescence of God.
After the rise of Christianity, Satan has become an out-and-out demon. He is not only free to do evil, but also unscrupulous. At the end of the world, he will be defeated by blazing angel Michael and then thrown into eternal hell by God.
Judging from the habits of Christianity, most of the gods (God is Jewish), angels (partly from Judaism) and demons (demonizing other religions) recorded in Christianity are inherited from other religions. Then, Satan, as the king of demons, is probably the evil god Seth in Egypt.
As for the relationship between Satan and Lucifer, Satan is an ancient snake and Lucifer is a star. There is no direct relationship between them. Compared with the ugliness of Satan in the Bible, the ugliness of Lucifer is more prominent. Its original image is probably the blazing angel Metatron in Judaism. With 36 wings on his back, he has a series of titles such as "Angel of Creation", "King of the Heavenly Army", "Little Lord", "Contract Angel" and "Creator of Everything". However, due to its high status, it will directly affect the status of Christ Jesus, the founder of Christianity. Therefore, there is no record of his identity in the Christian Bible. Instead, it was the fall of Lucifer, which was similar in position to Lucifer, meaning the fall of Metatron.
Later Christian scholars mostly lacked the study of Judaism, so a series of wrong concepts such as "Satan is just a title" and "Satan is Lucifer" appeared, all of which were the result of unreasonable uglification of other religious gods by Christianity.
Moreover, the Christian doctrine itself is full of contradictions. There are numerous contradictions and great differences among the four versions of the New Testament Gospel (Matthew, Kyle, Luke and John). Even after the revision of the Roman church, its versions are still difficult to unify. This is why the definition of Satan is ambiguous.