The serpent has had a negative reputation ever since one tempted Eve with the forbidden fruit in the Garden of Eden. However, it has also been a symbol of eternity, as it creates a circle by holding its tail in its mouth. The ancient Greeks and Romans considered the serpent a guardian spirit. In the Bible the serpent symbolizes subtlety, wisdom, and the devil: "Now the serpent was more subtil [sic] than any beast of the field which the Lord God had made" (Genesis 3:1). "Be ye therefore wise as serpents, and harmless as doves" (Matthew 10:16). In Genesis 3:1-6, the serpent tempts Eve to eat the forbidden fruit. If you dream of a serpent, it's a sign of repressed energy, usually sexual energy. It usually indicates doubts about desirability and one's own sexuality. Accepting these energies as normal and natural will improve every area of your life.