Proverbs 15:21 KJV

Folly is joy to him that is destitute of wisdom: but a man of understanding walketh uprightly.

Proverbs 15:1–33A right cause will be better pleaded with meekness than with passion. Nothing stirs up anger like grievous words. 2. He that has knowledge, is to use it...

Proverbs 10:23 It is as sport to a fool to do mischief: but a man of understanding hath wisdom.
Ephesians 5:15 See then that ye walk circumspectly, not as fools, but as wise,
Job 28:28 And unto man he said, Behold, the fear of the Lord, that is wisdom; and to depart from evil is understanding.
Psalms 111:10 The fear of the LORD is the beginning of wisdom: a good understanding have all they that do his commandments: his praise endureth for ever.
Proverbs 11:12 He that is void of wisdom despiseth his neighbour: but a man of understanding holdeth his peace.
Proverbs 14:9 Fools make a mock at sin: but among the righteous there is favour.
Proverbs 14:16 A wise man feareth, and departeth from evil: but the fool rageth, and is confident.
Proverbs 26:18–19 As a mad man who casteth firebrands, arrows, and death, …
James 3:13 Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom.

From OpenBible.info, most relevant first.

Folly אִוֶּלֶת ʾiwwelet אִוֶּלֶת Noun · feminine singular
joy שִׂמְחָה śimḥâ שִׂמְחָה Noun · feminine singular
to him that is destitute לַחֲסַר laḥăsar חָסֵר Adjective · masculine singular · with preposition
of wisdom לֵב lēb לֵב Noun · masculine singular
but a man וְאִישׁ wĕʾîš אִישׁ Noun · masculine singular construct · with and
of understanding תְּבוּנָה tĕbûnâ תָּבוּן Noun · feminine singular
walketh לָכֶת lāket יָלַךְ Verb · qal infinitive construct
uprightly יְיַשֶׁר yĕyašer יָשַׁר Verb · piel imperfect, third person masculine singular

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