Proverbs 15:21
 Proverbs 15:21 
New International Version (©2011)
Folly brings joy to one who has no sense, but whoever has understanding keeps a straight course.

New Living Translation (©2007)
Foolishness brings joy to those with no sense; a sensible person stays on the right path.

English Standard Version (©2001)
Folly is a joy to him who lacks sense, but a man of understanding walks straight ahead.

New American Standard Bible (©1995)
Folly is joy to him who lacks sense, But a man of understanding walks straight.

King James Bible (Cambridge Ed.)
Folly is joy to him that is destitute of wisdom: but a man of understanding walketh uprightly.

Holman Christian Standard Bible (©2009)
Foolishness brings joy to one without sense, but a man with understanding walks a straight path.

International Standard Version (©2012)
Stupidity is the delight of the senseless, but an understanding man walks uprightly.

NET Bible (©2006)
Folly is a joy to one who lacks sense, but one who has understanding follows an upright course.

Aramaic Bible in Plain English (©2010)
A foolish man is lacking heart and an understanding man walks justly.

GOD'S WORD® Translation (©1995)
Stupidity is fun to the one without much sense, but a person who has understanding forges straight ahead.

King James 2000 Bible (©2003)
Folly is joy to him that is destitute of wisdom: but a man of understanding walks uprightly.

American King James Version
Folly is joy to him that is destitute of wisdom: but a man of understanding walks uprightly.

American Standard Version
Folly is joy to him that is void of wisdom; But a man of understanding maketh straight his going.

Douay-Rheims Bible
Folly is joy to the fool: and the wise man maketh straight his steps.

Darby Bible Translation
Folly is joy to him that is void of sense; but a man of understanding regulateth his walk.

English Revised Version
Folly is joy to him that is void of wisdom: but a man of understanding maketh straight his going.

Webster's Bible Translation
Folly is joy to him that is destitute of wisdom: but a man of understanding walketh uprightly.

World English Bible
Folly is joy to one who is void of wisdom, but a man of understanding keeps his way straight.

Young's Literal Translation
Folly is joy to one lacking heart, And a man of intelligence directeth his going.

Matthew Henry's Concise Commentary

15:16,17. Believers often have enough when worldly eyes see little; the Lord is with them, without the cares, troubles, and temptations which are with the wealth of the wicked. 18. He that is slow to anger, not only prevents strife, but appeases it, if kindled. 19. Those who have no heart to their work, pretend that they cannot do their work without hardship and danger. And thus many live always in doubt about their state, because always in neglect of some duty. 20. Those who treat an aged mother or a father with contempt or neglect, show their own folly. 21. Such as are truly wise, study that their thoughts, words, and actions should be regular, sincere, and holy. 22. If men will not take time and pains to deliberate, they are not likely to bring any thing to pass. 23. Wisdom is needed to suit our discourse to the occasions. 24. A good man sets his affections on things above; his way leads directly thither.


Pulpit Commentary

Verse 21. - Folly is joy to him that is destitute of wisdom; literally, void of heart; i.e. of understanding (Proverbs 10:23). The perverse, self-willed fool finds pleasure in going on his evil way, and exposing the fatuity which he takes for wisdom. Septuagint, "The ways of the senseless are wanting in intelligence." A man of understanding walketh uprightly; goes the right way. It is implied that the fool goes the wrong way.


Gill's Exposition of the Entire Bible

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 Proverbs 10:23;

but a man of understanding walketh uprightly; he who has his understanding enlightened by the Spirit of God; who has an understanding given him by the Son of God; who has a spiritual and experimental understanding of the Gospel, and the truths of it: he walks according to the rule of the divine word; he walks as he has Christ for an example, and by faith on him; and after the spirit, and not after the flesh: or "directs himself in walking" (r), his goings, as the Vulgate Latin version, according to the above rule, example, and guidance, by the assistance of the spirit and grace of God; otherwise it is not in man that walketh of himself to direct his steps, Jeremiah 10:23.

(q) "carenti corde", Montanus; "ei qui deficitur", Schultens. (r) "diriget seipsum ambulando", Montanus; "diriget ambulare, vel ad ambulandum", Vatablus; "diriget viam suam ad ambulandum", Mercerus, Gejerus.


Jamieson-Fausset-Brown Bible Commentary

21. walketh uprightly—and so finds his joy (Pr 3:6; 10:23).


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A Gentle Answer Turns Away Wrath
20A wise son makes a glad father: but a foolish man despises his mother. 21Folly is joy to him that is destitute of wisdom: but a man of understanding walks uprightly. 22Without counsel purposes are disappointed: but in the multitude of counsellors they are established. …

Ephesians 5:15 Be very careful, then, how you live--not as unwise but as wise,
Proverbs 10:23 A fool finds pleasure in wicked schemes, but a person of understanding delights in wisdom.
Proverbs 14:8 The wisdom of the prudent is to give thought to their ways, but the folly of fools is deception.
Proverbs 15:22 Plans fail for lack of counsel, but with many advisers they succeed.