3687. kesiluth
Lexical Summary
kesiluth: Foolishness, folly

Original Word: כְּסִילוּת
Part of Speech: Noun Feminine
Transliteration: kciyluwth
Pronunciation: keh-see-LOOTH
Phonetic Spelling: (kes-eel-ooth')
KJV: foolish
NASB: folly
Word Origin: [from H3684 (כְּסִיל - fool)]

1. silliness

Strong's Exhaustive Concordance
foolish

From kciyl; silliness -- foolish.

see HEBREW kciyl

NAS Exhaustive Concordance
Word Origin
from kasal
Definition
stupidity
NASB Translation
folly (1).

Brown-Driver-Briggs
כְּסִילוּת noun feminine stupidity; — Proverbs 9:13 ׳אֵשֶׁת כ, the woman Stupidity, in antithesis with חָכְמוֺת the Supreme Wisdom personified as a woman.

Topical Lexicon
Summary of Meaning

כְּסִילוּת depicts a settled disposition of foolishness that resists wisdom and moral instruction. It is not intellectual limitation but a willful, self-absorbed posture that despises the fear of the LORD.

Scriptural Context

The term appears once, in Proverbs 9:13, within Solomon’s extended contrast between wisdom and folly (Proverbs 1–9). Wisdom is portrayed as a noble lady inviting the inexperienced to life; folly is cast as a loud, reckless woman whose guests descend to Sheol. By using the singular word כְּסִילוּת, the inspired author concentrates the full weight of moral folly into one vivid personification.

Personification of Folly

“Folly is an unruly woman; she is simple and knows nothing” (Proverbs 9:13). This literary device places foolishness in direct competition with personified Wisdom (Proverbs 8). Lady Folly’s:
• Volume—she is “loud,” clamoring for attention.
• Ignorance—she is “simple,” blind to the consequences of sin.
• Seduction—she offers stolen water and secret bread (Proverbs 9:17), symbolizing illicit pleasure.

Her banquet promises excitement but ends in spiritual death (Proverbs 9:18). The single occurrence of כְּסִילוּת underscores that true folly needs no multitude of words; one voice of rebellion can destroy many.

Literary and Theological Significance

1. Wisdom Theology: כְּסִילוּת embodies the antithesis of the “fear of the LORD” (Proverbs 9:10). Embracing folly is therefore a theological choice against God.
2. Covenant Ethics: Israel’s covenant demanded heart-level obedience (Deuteronomy 6:4-6). Folly represents covenant infidelity, rejecting Yahweh’s instruction.
3. Redemptive Typology: Lady Folly prefigures later biblical warnings about false teachers (2 Peter 2:1-3) who entice the unstable.

Historical Setting

Ancient Near Eastern scribal schools also contrasted wisdom and folly, yet Proverbs roots the issue in reverence for the LORD, not merely pragmatic skill. The single occurrence likely served as a mnemonic cue for young Israelites memorizing the text: folly is easily remembered and must be quickly avoided.

Related Concepts

• אִוֶּלֶת (ivvelet, “foolishness”)—general lack of discernment (Proverbs 14:17).
• כְּסִיל (kesil, “fool”)—a person hardened in moral stupidity (Proverbs 26:4).
• פֶּתִי (pethi, “simple”)—the uninstructed who are vulnerable to כְּסִילוּת (Proverbs 7:7).

Practical Implications for Ministry

• Preaching: Contrast the solitary but potent warning of כְּסִילוּת with the many calls of divine wisdom to highlight the urgency of repentance.
• Discipleship: Guide believers to identify modern “Lady Folly” voices—media, peer pressure, false doctrine—and replace them with Scripture.
• Counseling: Address habitual sin as an embodiment of folly; urge counselees to pursue the fear of the LORD as the beginning of knowledge.

Application for Contemporary Believers

1. Evaluate inputs: Whose table are you dining at—Wisdom’s or Folly’s?
2. Cultivate teachability: Folly refuses correction; the wise embrace it (Proverbs 9:8-9).
3. Remember consequences: “Her guests are in the depths of Sheol” (Proverbs 9:18). Every flirtation with כְּסִילוּת carries eternal stakes.

כְּסִילוּת stands as a solitary yet piercing reminder that true life is found only in heeding the voice of Wisdom and walking in the fear of the LORD.

Forms and Transliterations
כְּ֭סִילוּת כסילות kə·sî·lūṯ Kesilut kəsîlūṯ
Links
Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
Proverbs 9:13
HEB: אֵ֣שֶׁת כְּ֭סִילוּת הֹֽמִיָּ֑ה פְּ֝תַיּ֗וּת
NAS: The woman of folly is boisterous,
KJV: A foolish woman [is] clamorous:
INT: the woman of folly is boisterous naive

1 Occurrence

Strong's Hebrew 3687
1 Occurrence


kə·sî·lūṯ — 1 Occ.

3686
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