Matthew Henry's Complete Bible Commentary

Verse 20

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. Giving ill language will be a great disadvantage to us: He that has a perverse tongue, spiteful and abusive, scurrilous or backbiting, falls into one mischief or other, loses his friends, provokes his enemies, and pulls trouble upon his own head. Many a one has paid dearly for an unbridled tongue. MHBCC 646.20