sibylline

adjectives

resembling or characteristic of a prophet or prophecy

"the high priest's divinatory pronouncement"; "mantic powers"; "a kind of sibylline book with ready and infallible answers to questions"

divinatory, mantic, sibyllic, sibylline, vatic, vatical

having a secret or hidden meaning

"cabalistic symbols engraved in stone"; "cryptic writings"; "thoroughly sibylline in most of his pronouncements"- John Gunther