בְּֽפִי־אֱ֭וִיל חֹ֣טֶר גַּאֲוָ֑ה וְשִׂפְתֵ֥י חֲ֝כָמִ֗ים תִּשְׁמוּרֵֽם׃
In the mouth of the foolish is a rod of pride; But the lips of the wise shall preserve them. .
Rashi on Proverbs
In a fool’s mouth is a staff of haughtiness A stick of haughtiness, like Pharaoh, who said (Ex. 5: 2): “Who is the Lord that I should hearken to His voice?”
Rashi on Proverbs
but the lips of the wise guard them Heb. תשמורם, like תשמרם. They guard the wise.