According to Christian tradition, Satan, also known as the Devil, is considered the epitome of evil and the archenemy of God. Originally an angel in heaven, Lucifer was cast out for his pride and rebellion against God. In the form of a serpent, he tempted Eve in the Garden of Eden to eat the forbidden fruit, initiating the fall of humanity. Satan is often portrayed as a cunning tempter, seeking to deceive and lead humans astray from their faith. He is associated with the concept of evil, temptation, and suffering.