Wisdom is found (comp. Psalms 37:30). The man of understanding is discreet in speech, and does not cause trouble by rash or foolish words. A rod (Proverbs 19:29; Proverbs 26:3). A fool brings upon himself punishment by his insensate talk.
Void of understanding; Hebrew, "wanting in heart;" Vulgate, qui indiget corde. The LXX. combines the two members into one proposition, "He who putteth forth wisdom with his lips is a rod to chastise the man without heart."
In the Hebrew conception the "heart" is the seat, not only of the passions and affections, but also of the intellectual faculties.