en_tn/psa/012/002.md

Everyone says ... everyone speaks

The two occurrences of "everyone" are exaggerations, used to emphasize that this is true of very many people. (See: rc://en/ta/man/translate/figs-hyperbole)

everyone speaks with flattering lips and a double heart

Here "lips" is a metonym for what people say, and "a double heart" is a metaphor for deception. Alternate translation: "everyone speaks with flattering words and deception" or "everyone praises people falsely and tells lies" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-metaphor)