Oracular

"In some of the Hebrides they attributed the same oracular power to a large black stone by the sea-shore, which they approached with certain solemnities, and considered the first fancy which came into their own minds, after they did so, to be the undoubted dictate of the tutelar deity of the stone, and, as such, to be, if possible, punctually complied with."

"And that slaughter to the Nation / Shall steam up like inspiration, / Eloquent, oracular; / A volcano heard afar."

"My Lord Chatham, whose wisdom his party in those days used to call superhuman, raised his oracular voice in the House of Peers against the American contest;"

"Nothing offended me but that lisping Miss Haughton, whose every speech is inarticulately oracular."