Almost every religion contains the enemy of the system, an individual who questions-why things are the way they are and who challenges the supreme power (God). He also accuses the religion of duplicity and hypocrisy and he leads humans away from cosmic ideals of submission and compliance.
The origin of the word Satan comes from ha-satan, a Hebrew word meaning "the accuser", or "the adversary". Satan appears in numerous belief systems. Unfortunately, there is a common speculation that all these Satanic characters must indeed be the same being, even though each religion has its own very different perception and portrayal of him.
Judaism teaches that humans were created with two predispositions, the yetzer tov, or good inclination, and the yetzer ra, the bad inclination. The disposition to be wicked or selfish is inside a person, it is not because of an outside force. The Jewish notion of Satan is that he is an angel who leads humans to become sinful and tempt the devotees to doubt their faith.
Regardless of his brief Biblical presences, Satan evolved into a wholly wicked and evil creature in the minds of Christians, an ex-angel campaigning against God who torments the souls of all those not saved at the hands of Jesus. The idea of Satan comes from comparing several other Biblical figures with Satan, including Lucifer, the dragon, the serpent, Beelzebub, and Leviathan and many others.
Though Hindus accept that there is evil in the world, there is no solitary devil-like creature in Hinduism. However, there is a notion of the asura, or evil spirit which also has a positive side to it. It is hard to find an entity for Satan in Hinduism, Norse religion, Greek religions because in polytheistic religions many beings have good and evil sides.
According to Islam, God created three gifted and brainy races namely the angels, jinn, and humans. The angels had no free will, constantly followed God, but the other two did. When God instructed the angels and jinn to bow down before Adam, the jinn Iblis only refused. Muslims have two denominations for their Satanic figure. One is Iblis, which is Satan’s proper name. The other is shaitan, which describes any being that rebels against God.
LaVeyan Satanists do not accept Satan in a literal sense but instead, use the name as a metaphor for humankind's true nature. Satan is not evil, but he does epitomize a variety of things trademarked as evil by the traditional religions and societies including sexuality, gratification, lust, sensuality, libido, ego, pride, passion, success and many other emotions.
The joy of Satan Ministries
Like many theistic Satanists, Joy of Satan followers view Satan as one of the deities. According to them Satan has created human beings and desires his creations to elevate themselves through knowledge and intelligence.
According to them, Satan is one of the Elohim, the species of aliens that created the human race. Satan considers humans as a peril and believes they should be destroyed. He does so with the certainty that only evil can eventually arise from humanity.
According to these members, Satan is a creature that has partially undergone the process of conversion and was on the verge of gaining admission into heaven when Satan and other "fallen angels" resolved to re-embrace material existence.
It seems that the primary role of Satan in various guises in any religion is a denunciation of spiritual wishful thinking and embracing of the real present world.