Flattereth — literally, “The man who opens his lips,” who has no reticence; such a man, with or without intending it, does the work of a tal…

Flatters with his lips.—Rather, is open with his lips, cannot keep them shut.

He that goes about [as] a talebearer reveals secrets
Or, "he that reveals secrets goes about as a talebearer";

Those pay dearly for their own praise, who trust a man because he speaks smoothly.