Definition of Folly in Proverbs 15:2
Proverbs 15:2 states, "The tongue of the wise commends knowledge, but the mouth of fools gush out folly" [2]. This verse contrasts the speech of the wise with that of fools, highlighting the nature of folly as something impulsively expressed.
The book of Proverbs frequently contrasts wisdom and folly, often personifying them as opposing forces [7]. This particular verse is part of a larger collection of Solomonic proverbs that emphasize the importance of speech and its impact [7]. The wise person's tongue "commends knowledge," suggesting a deliberate and beneficial sharing of understanding. In contrast, the fool's mouth "gushes out folly," implying an uncontrolled and abundant outpouring of foolishness [2].
The Hebrew word for "folly" (אִוֶּלֶת, ’iwwæleṯ) in Proverbs carries significant weight. It is not merely a lack of intelligence but often denotes a moral and spiritual deficiency [4]. According to Torrey's Topical Textbook, fools are characterized by a denial of God, blasphemy, and a general disregard for instruction and knowledge [3]. They "make a mock at sin" and "hate to depart from evil" [3]. This aligns with the idea that folly is not just an intellectual failing but a chosen path of behavior.
Several commentators elaborate on the nature of this folly. John Gill notes that "folly" in this context refers to sin, which is pleasurable to the "wicked he chooses it and delights in it" [4]. He explains that such individuals not only commit sin with pleasure but also boast about it [4]. Similarly, Matthew Henry observes that a wicked person "takes pleasure in sin," swallowing the "bait" greedily and delighting in their own folly [5]. This suggests that the "gushing out" of folly is not accidental but a reflection of an inner disposition that finds joy in sinful acts [5]. Rashi, a prominent Jewish commentator, also interprets "folly is joy" as meaning it is a source of happiness for those devoid of sense [6].
Thomas Aquinas, in his Summa Theologica, distinguishes between two types of folly. One arises from a natural indisposition, as seen in those with intellectual disabilities, which is not considered a sin. The second type, however, is a moral failing, where an individual "plung[es] his sense into earthly things," rendering them incapable of perceiving higher truths [9]. This latter definition aligns with the Proverbial understanding of folly as a willful turning away from wisdom and righteousness.
The contrast between the wise and the foolish in Proverbs 15:2 is further illuminated by other verses in the book. For instance, Proverbs 15:21 states, "Folly is joy to one lacking heart, And a man of intelligence directeth his going" [1]. This reinforces the idea that folly is a source of delight for those who lack spiritual understanding, while the wise carefully guide their actions [1, 4]. Another related proverb, 18:2, suggests that a fool "takes pleasure in revealing his folly" [8]. This highlights the unbridled nature of the fool's speech, which readily exposes their lack of wisdom.
The concept of folly in Proverbs 15:2, therefore, extends beyond simple ignorance. It describes a moral condition characterized by a delight in sin, a rejection of instruction, and an unrestrained expression of foolishness through speech [3, 4, 5]. The wise, by contrast, carefully and constructively share knowledge, demonstrating a disciplined and righteous character [2, 10].
Sources
- Proverbs “Proverbs 15:21 (YLT) — Folly is joy to one lacking heart, And a man of intelligence directeth <FI>his<Fi> going.”
- Proverbs “The tongue of the wise commends knowledge, but the mouth of fools gush out folly. -- Proverbs 15:2”
- Torrey's Topical Textbook “Torrey's Topical Textbook: Fools — All men are, without the knowledge of God -- Tit 3:3. Deny God -- Ps 14:1; 53:1. Blaspheme God -- Ps 74:18. Reproach God -- Ps 74:22. Make a mock at sin -- Pr 14:9. Despise instruction -- Pr 1:7; 15:5. Hate knowledge -- Pr 1:22. Delight not in understanding -- Pr 18:2. Sport themselves in mischief -- Pr 10:23. Walk in darkness -- Ec 2:14. Hate to depart from evil -- Pr 13:19. Worship of, hateful to God -- Ec 5:1. Are Corrupt and abominable. -- Ps 14:1. Self-sufficient. -- Pr 12:15; Ro 1:22. Self-confident. -- Pr 14:16. Self-deceivers. -- Pr 14:8. Mere profess”
- Proverbs (Baptist/Reformed) “John Gill on Proverbs 15:21: Folly is joy to him that is destitute of wisdom,.... Or "that wants a heart" (q), a wise and understanding one; by "folly" is meant sin, for all sin is folly; and that is very pleasing and joyous to a wicked he chooses it and delights in it; instead of being ashamed of it, and sorry for it, he glories in it, and makes his boast of it; and not only takes pleasure in committing it himself, but also in those that do it; see Pro 10:23; but a man of understanding walketh uprightly; he who has his understanding enlightened by the Spirit of God; who has an understanding”
- Proverbs (Nonconformist/Puritan) “Matthew Henry on Proverbs 15:21: Note, 1. It is the character of a wicked man that he takes pleasure in sin; he has an appetite to the bait, and swallows it greedily, and has no dread of the hook, nor feels from it when he has swallowed it: Folly is joy to him; the folly of others is so, and his own much more. He sins, not only without regret, but with delight, not only repents not of it, but makes his boast of it. This is a certain sign of one that is graceless. 2. It is the character of a wise and good man that he makes conscience of his duty. A fool lives at large, walks at all adventures, ”
- Sefaria (Jewish (Rabbinic)) “Rashi (Rabbi Shlomo Yitzchaki) on Proverbs 15:21: Folly is joy It is joy for the one devoid of sense.”
- Proverbs (Lutheran) “Keil & Delitzsch on Proverbs 15:20: This collection of Solomonic proverbs began, Pro 10:1, with a proverb having reference to the observance of the fourth commandment, (Note: The fifth commandment of the Westminster Shorter Catechism is named as the fourth in Luther's catechism.) and a second chief section, Pro 13:1, began in the same way. Here a proverb of the same kind designates the beginning of a third chief section. That the editor was aware of this is shown by the homogeneity of the proverbs, Pro 15:19; Pro 12:28, which form the conclusion of the first and second sections. We place toget”
- Proverbs (Presbyterian) “Jamieson, Fausset & Brown on Proverbs 18:2: that his heart . . . itself--that is, takes pleasure in revealing his folly (Pro 12:23; Pro 15:2).”
- theology (Catholic (Scholastic)) “Aquinas, Summa Theologica, Second Part of the Second Part (Secunda Secundae), Of Folly Which Is Opposed to Wisdom, Art. 2: Article: Whether folly is a sin? I answer that, Folly, as stated above (Article [1]), denotes dullness of sense in judging, and chiefly as regards the highest cause, which is the last end and the sovereign good. Now a man may in this respect contract dullness in judgment in two ways. First, from a natural indisposition, as in the case of idiots, and such like folly is no sin. Secondly, by plunging his sense into earthly things, whereby his sense is rendered incapable of pe”
- Proverbs (Presbyterian) “Jamieson, Fausset & Brown on Proverbs 15:28: (Compare Pro 15:14; Pro 10:11). Caution is the fruit of wisdom; rashness of folly.”