Proverbs 15:21

Hebrew	אִ֭וֶּלֶת שִׂמְחָ֣ה לַחֲסַר לֵ֑בplugin-autotooltip__default plugin-autotooltip_bigלֵב hebrew Meaning: * The heart * Used figuratively for the feelings, the will and even the intellect * The centre of anything Noun, masculine (although conceptually neutral, being used for both men and women). Occurs nearly 600 times in the Old Testament.1 Samuel 25:37Genesis 6:5Exodus 8:151 Samuel 24:51 Samuel 16:7Jeremiah 17:9Deuteronomy 10:16Deuteronomy 6:5Deuteronomy 6:5Psalm 9:1 (NIV)(verse 2 in the Hebrew Bible)Deuteronomy 6:5Genesis 6:51 Samuel 1:13Psalm 95:10Deuteronomy 6:5… וְאִ֥ישׁ תְּ֝בוּנָ֗ה יְיַשֶׁר לָֽכֶת
ESV	Folly is a joy to him who lacks sense, but a man of understanding walks straight ahead.
NIV	Folly delights a man who lacks judgment, but a man of understanding keeps a straight course.
NLT	Foolishness brings joy to those with no sense; a sensible person stays on the right path.
LXX	ἀνοήτου τρίβοι ἐνδεεῖς φρενῶν ἀνὴρ δὲplugin-autotooltip__default plugin-autotooltip_bigδέ greek δέ is a conjunction that can mean “but” or “and” or “also” or “moreover”. It is a word that is used very frequently in the New Testament, and is often unexpressed and not translated in English. φρόνιμος κατευθύνων πορεύεται
KJV	Folly is joy to him that is destitute of wisdom: but a man of understanding walketh uprightly.