The madness is the whip; the whip the madness. On vases, Erinyes carry torches, swords, goads, whips, snakes.
Padel argues that in Greek tragic imagery the whip is structurally identical with madness itself—simultaneously the instrument of divine punishment and the phenomenology of the disordered mind.
, In and Out of the Mind Greek Images of the Tragic Self, 1994thesis