John Gills Exposition of the Bible Commentary - Proverbs 12:16
A fool's wrath is presently known ,.... Having no command of himself, he cannot repress it, nor keep it in; no sooner is he provoked but he shows it in his countenance, and by his words and actions; it is to be seen in the fire of his eyes, in the frowns of his face, in the gnashing of his teeth, and in the stamping of his feet, as well as in the bitter expressions of his mouth: or "a fool's wrath in that day is known" F2 ביום "eo die quo irritatur", Tigurine version; "eodem die",... read more
Matthew Henry's Complete Commentary - Proverbs 12:16
Note, 1. Passion is folly: A fool is known by his anger (so some read it); not but that a wise man may be angry when there is just cause for it, but then he has his anger under check and direction, is lord of his anger, whereas a fool's anger lords it over him. He that, when he is provoked, breaks out into indecent expressions, in words or behaviour, whose passion alters his countenance, makes him outrageous, and leads him to forget himself, Nabal certainly is his name and folly is with him. A... read more