⁵ sn This “ruler” (KJV, NASB “prince”; NAB “noble”) is a gentleman with a code of honor, to whom truthfulness is second nature (W. McKane, Proverbs [OTL], 507). The word describes one as “inclined, generous, noble” (BDB 622 s.v. נָדִיב). It is cognate to the word for the “free will offering.” So for such a noble person lies are not suited. The argument is from the lesser to the greater—if fools shouldn’t speak lofty things, then honorable people should not lie (or, lofty people should not speak base things).