Prescott on Incan Oracles

In Greek and Roman Antiquity, the instrumentality, agency, or medium, by which a god was supposed to speak or make known his will. (OED)

"The temple of Pachacamac continued to maintain its ascendancy; and the oracles, delivered from its dark and mysterious shrine, were held in no less repute among the natives than the oracles of Delphi obtained among the Greeks."

William Prescott, The Conquest of the Incas (1847).