What Does the Serpent Mean? Renewal, Knowledge and the Ground

Four meanings appear again and again. Renewal and immortality come from moulting, since an animal that sheds its skin and emerges apparently new supplies an obvious image of rebirth, and several traditions contain a story in which immortality was meant for people and went to the snake instead. Healing follows from renewal and produces the association with medicine that survives in the staff entwined with a serpent used as a medical emblem. Knowledge and prophecy come partly from the connection to the underworld and partly from the unblinking stare, and several traditions have serpents guarding or granting wisdom. The underworld and the earth follow from living in holes and emerging from the ground. Fertility attaches through the earth connection and through the shape. Danger is present and is less dominant than a modern reader expects.

The associations recur across unconnected traditions:

• •Mesopotamian literature, where a snake steals the plant of immortality from a hero who had just obtained it
• •Greek tradition, with a healing god whose emblem is a serpent-entwined staff and whose temples kept live snakes
• •Egyptian tradition, with a cobra on the royal headdress protecting the ruler and a serpent threatening the sun each night
• •Mesoamerican traditions, with the feathered serpent as a major deity associated with wind, learning and creation
• •Hindu tradition, with serpent beings guarding treasure and water and associated with both danger and protection
• •Australian traditions, with a rainbow serpent associated with water, creation and the shaping of the land

Two specific images recur with enough consistency to be worth separating. A serpent swallowing its own tail appears in Egyptian, Greek, Norse and later alchemical contexts and carries a meaning about cyclicality, self-sufficiency and the eternal return, and its persistence through completely different intellectual frameworks is striking. Two serpents entwined around a staff, distinct from the single-serpent healing emblem, belonged to a messenger god and concerned commerce and negotiation rather than medicine, and the two are confused constantly, particularly in North America where the wrong one was adopted for medical use and has stuck. Paired serpents also appear in Mesopotamian and Indian contexts. Whether these images spread by contact or arose independently is argued case by case, and the strongest evidence for transmission is where the accompanying details match as well as the image.

One tradition made the animal primarily an adversary and its influence is disproportionate in the English-speaking world. The serpent in the Genesis account is a tempter, and later interpretation identified it with a specific adversary figure, which fixed a negative association across the cultures shaped by that text. Christian art then attached serpents to sin, deceit and the devil, and the imagery is pervasive in European painting. That reading is a development rather than an obvious feature of the original text, which describes the animal as crafty without making it a supernatural enemy. The consequence is that a modern English reader arrives at any serpent symbolism with a strong prior that the animal means evil, which misreads most of the traditions it appears in and which is worth setting aside deliberately when reading anything from outside that inheritance.

The concentration of symbolic weight on this one animal has a plausible basis. Primates including humans detect snakes unusually quickly, and evidence from attention experiments and from the response of infants supports a specific readiness to notice them, which is generally explained by a long history of predation risk. That means snakes are attended to more than other animals of comparable size and are therefore more available for symbolic use. Their biology supplies unusual features, since limbless movement, moulting, the fixed stare and venom are all conspicuous and unlike anything else in a person's environment. And they occupy the boundary between above ground and below, which is exactly where a symbol mediating between the living world and the underworld needs to sit. The combination is why the animal carries so much more meaning than its ecological role would suggest.

Moulting supplies renewal and immortality, the underworld connection supplies knowledge and the dead, and the earth connection supplies fertility, with danger a smaller component than expected. A snake steals immortality in Mesopotamian literature and a serpent-entwined staff still marks medicine. Primates detect snakes unusually fast, which makes them available for symbolic use out of proportion to their ecological role.