притча во языцех

Etymology
"a fable/parable in/among the people", following its semantics and grammar. It's used several times in the Old Testament.

Noun

 * 1)  talk of the town a topic or person discussed by many people

Usage notes

 * The term is used in the archaic sense "people".
 * The collocation "во язы́цех" is only used in this set expression and is considered grammatically incorrect, otherwise, cf. modern Russian "в языка́х" (in languages; in tongues).