Origen

“ For our reply to him will be, that he who is believed among the Greeks to be a god, viz., the Pythian and Didymean Apollo, makes use of such a voice for his Pythian priestess at Delphi, and for his prophetess at Miletus; and yet neither the Pythian nor Didymean is charged by the Greeks with not being a god, nor any other Grecian deity whose worship is established in one place. And it was far better, surely, that a god should employ a voice which, on account of its being uttered with power, should produce an indescribable sort of persuasion in the minds of the hearers. ”