Solomon
Proverbs 17:20BSB·traditional attribution

The one with a perverse heart finds no good, and he whose tongue is deceitful falls into trouble.

Keil & Delitzsch Lutheran

Pro 17:20 20 He that is of a false heart findeth no good; And he that goeth astray with his tongue falleth into evil. Regarding עקּשׁ־לב, vid., Pro 11:20. In the parallel member, נהפּך בּלשׁונו is he who twists or winds (vid., at Pro 2:12) with his tongue, going about concealing and falsifying the truth.

Matthew Henry Presbyterian

Note, 1. Framing ill designs will be of no advantage to us; there is nothing got by them: He that has a froward heart, that sows discord and is full of resentment, cannot promise himself to get by it sufficient to counterbalance the loss of his repose and reputation, nor can he take any rational satisfaction in it; he finds no good. 2.

John Gill Reformed Baptist

He that hath a froward heart findeth no good,.... Who is of a perverse spirit, meditates and devises evil things; is not ingenuous and sincere, but false and deceitful to God and men: such an one gets no good from either; he obtains not the favour of God, nor a good name, credit, and reputation among men; and he that hath a perverse tongue falleth...