A Herald's Staff Before It Was A God's

The Caduceus belongs to Hermes as his herald's staff, shown with two serpents coiled symmetrically around a central rod and typically surmounted by a pair of small wings, an image Walter Burkert's account of Greek religion situates within Hermes's defining role as the god who moves freely between the world of gods and the world of mortals, between the living and the dead, and between hostile parties in need of a negotiated truce. The staff itself, before the serpents are added to it, is the plain herald's wand carried by any Greek messenger under diplomatic protection, and its transformation into Hermes's specific emblem layers his particular boundary-crossing role onto an object that already meant safe passage in ordinary Greek civic life.

Burkert notes that the herald's staff carried this diplomatic immunity in ordinary Greek civic practice independent of any specifically religious ritual, so Hermes's version of the object is best read as the god of boundary crossing adopting an already meaningful secular emblem rather than a purely invented divine attribute. Burkert notes the same staff appears in Greek vase painting and relief carving from the archaic period onward, making it one of the more consistently attested divine attributes across the whole span of surviving Greek religious art, rather than a late addition to Hermes's iconography.