Meaning of Satan
What is Satan:
The word Satan comes from the Hebrew Satan, which means ‘enemy’, ‘opponent’ or ‘adversary’. It does not necessarily refer to a character, but to that which is associated with evil and temptation, that is, to that which separates the person from the spiritual path, which hinders the good and which is openly opposed to it.
According to some scholars, the belief in the duality between good and evil comes from Persian culture, more specifically from the teachings of Zarathustra, a precursor of monotheism. In this way, the belief in an "adversary of God" or "satan" would have reached the Jewish culture. Consequently, Satan appears referred to in the books of the three Abrahamic religions: Judaism, Christianity and Islam.
Although the term does not originally refer to a character, in tradition Satan is personified and associated with Lucifer, the fallen angel who claimed to be like God. Both voices are identified with the devil. Devil comes from the Greek word devils, formed in turn from the particles day, which means 'through', and whale, which means 'throw or throw'. Together, these particles acquire the meaning of 'the one who divides', 'the one who separates' and, finally, 'the one who slanders'.
Satan also appears personified in the book of Job, one of the wisdom books of the Old Testament. In this book, Satan acts as an accusing angel of men. Thus, he makes a deal with Yahveh to allow him to tempt them and demonstrate their little spiritual worth. Convinced that he will win, God allows him to tempt Job, who is victorious.
The tendency to the personification of Satan is sharpened from the interpretations on the New Testament. In this book, he is repeatedly referred to as "prince of this world" or "enemy of Christ," reinforcing the image of Satan as a being with a will, that is, a person or character.
See also The Bible.
Difference between Satan and demon
Some interpretations have tended to confuse Satan with the notion of the devil, from which he absolutely differs. This fact derives from the evangelical narratives in which Jesus frees the sick from “demons”. However, they are not equivalent concepts.
The word demon comes from the Greek daimon, which means "genius" or "spirit" not personified. In ancient thought, it was believed that people could be taken by this genius or spirit and act according to the behavior that it instilled in them. Such a spirit could be evil or benign indistinctly.
See also Demon.