Use of the Tongue
Verse 3 contrasts the impact of speech practices of the foolish and the wise. The foolish are not mentally deficient but arrogant, rebellious, despisers of the LORD. Their speech is said to be a rod (sprig) of pride, because it proceeds from an evil nature which, if not changed by Divine power, leads to destruction, Proverbs 10:14; Proverbs 13:3; Proverbs 18:7. The wise guided by the power and counsel of wisdom, are delivered from the ills of evil speaking and use their power of speech to honor the LORD and do His bidding, Proverbs 2:10-12; Proverbs 12:6; Proverbs 19:1; Psalms 145:20-21.