Snakes Carry Out Divine Demands
Early inhabitants of Crete may have believed that the kingdom of snakes enjoyed a special affinity with the gods; they seem to have known, for instance, that snakes, when called upon by the gods, carried out demands. Snakes came to people with messages; they stood as portents, executed miscreants, or indicated actions to be taken or avoided. In due time, gods were known to take the form of snakes in order to inflict good or evil upon mortals, and mortals were careful in dealing with snakes.
— Lee Hall, Athena: A Biography, pp. 27-28