the idol is represented as mobile. Even if the xoanon has no feet or its legs are sealed together, it is always believed to be on the point of escaping, of deserting one place to go off elsewhere
Vernant argues that the Greek idol is not an inert representation but a mobile divine presence whose ritual management — dressing, bathing, leading forth — constitutes the very mechanism by which numinous power is localised and controlled.
, Myth and Thought Among the Greeks, 1983thesis