It should be noted that Satan did not use the tongue of the poor possessed woman to make himself understood. The helpless creature had been unconscious during the greater part of the trial. Her mouth was closed tight. Even when it was open there was not the slightest movement of the lips, nor were there any changes in the position of the mouth. The evil spirits simply spoke in an audible manner from somewhere within her. Possibly they used some inner organ of the body.
We know from the early Christian writers of the Roman period that the heathens frequently heard voices coming out of the idols. Catherine Emmerich also states that the evil spirits took up their abode in these idols and could clearly be heard to speak from within them in order to confirm the heathens in their delusion of idolatry. So it is conceivable how even some of the highly educated heathens worshipped these statues made by the hands of man, and why they offered sacrifices to them as if they were gods. They rendered to these idols the honor that belongs to God alone.