Proverbs 18:4
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The words of a man's mouth are as deep waters, and the wellspring of wisdom as a flowing brook.

Proverbs 18 Commentaries: BarnesClarkeDarbyGillGenevaGuzikJFBKeil / DelitzschKJV Translators'Henry's ConciseMatthew HenryScofieldTSKWesley
Barnes' Notes on the Bible

The parallelism of the two clauses is probably one of contrast. If so, the proverb is a comparison between all teaching from without and that of the light within. "The words of a man's mouth" are dark as the "deep waters" of a pool, or tank ("deep waters" being associated in the Old Testament with the thought of darkness and mystery; compare Proverbs 20:5; Psalm 69:2; Ecclesiastes 7:24); but "the wellspring of wisdom is as a flowing brook," bright and clear. The verse presents a contrast like that of Jeremiah 2:13.


Clarke's Commentary on the Bible

The words of a man's mouth - That is, the wise sayings of a wise man are like deep waters; howsoever much you pump or draw off, you do not appear to lessen them.

The well-spring of wisdom - Where there is a sound understanding, and a deep, well-informed mind, its wisdom and its counsels are an incessant stream, מקור חכמה mekor chochmah, "the vein of wisdom," ever throwing out its healthy streams: but מקור חיים mekor chaiyim, "the vein of Lives," is the reading of eight of Kennicott's and De Rossi's MSS., and is countenanced by the Septuagint, πηγη ζωης, "the fountain of life." And so the Arabic. This is the more likely to be the true reading, because the figure of the heart propelling the blood through the great aorta, to send it to all parts of the animal system, is a favourite with Solomon, as it was with his father, David. See the note on Psalm 36:9; Proverbs 10:11, etc.


Gill's Exposition of the Entire Bible

The words of a man's mouth are as deep waters,.... The words of a great and mighty man; of an excellent and valuable man, as Jarchi; or of a wise man, as Aben Ezra. The doctrines which such a man has imbibed, and his heart is full of and his mouth utters, are like to "waters", pure, purifying, and refreshing; to "deep waters", which make no noise, and cannot be easily fathomed: such are the deep mysteries of grace, the wisdom of God in a mystery, spoken among them that are perfect; of which a good man makes no boast, but humbly declares; out of the abundance of his heart, his mouth speaks;

and the wellspring of wisdom as a flowing brook; there is a spring of spiritual wisdom and knowledge in him; a well of living water, springing up unto everlasting life; and from thence it flows freely and constantly; communicating itself liberally unto others, and ministering grace to the hearers, for their edification.


Keil and Delitzsch Biblical Commentary on the Old Testament

4 Deep waters are the words from a man's mouth,

   A bubbling brook, a fountain of wisdom.

Earlier, we added to hominis the supplement sc. sapientis, but then an unnecessary word would be used, and that which is necessary omitted. Rather it might be said that אישׁ is meant in an ideal sense; but thus meant, אישׁ, like גּבר, denotes the valiant man, but not man as he ought to be, or the man of honour; and besides, a man may be a man of honour without there being said of him what this proverb expresses. Ewald comes nearer the case when he translates, "deep waters are the heart-words of many." Heart-words - what an unbiblical expression! The lxx, which translates λόγος ἐν καρδίᾳ, has not read דברי לב, but דבר בלב (as Proverbs 20:5, עצה בלב־). But that "of many" is certainly not a right translation, yet right in so far as אישׁ (as at Proverbs 12:14) is thought of as made prominent: the proverb expresses, in accordance with the form of narrative proverbs which present an example, what occurs in actual life, and is observed. Three different things are said of the words from a man's mouth: they are deep waters, for their meaning does not lie on the surface, but can be perceived only by penetrating into the secret motives and aims of him who speaks; they are a bubbling brook, which freshly and powerfully gushes forth to him who feels this flow of words, for in this brook there never fails an always new gush of living water; it is a fountain or well of wisdom, from which wisdom flows forth, and whence wisdom is to be drawn. Hitzig supposes that the distich is antithetic; מים עמקּים, or rather מי מעמקּים, "waters of the deep," are cistern waters; on the contrary, "a welling brook is a fountain of wisdom." But עמק means deep, not deepened, and deep water is the contrast of shallow water; a cistern also may be deep (cf. Proverbs 22:14), but deep water is such as is deep, whether it be in the ocean or in a ditch. 4b also does not suggest a cistern, for thereby it would be indicated that the description, דברי פי־אישׁ, is not here continued; the "fountain of wisdom" does not form a proper parallel or an antithesis to this subject, since this much rather would require the placing in contrast of deep and shallow, of exhausted (drained out) and perennial. And: the fountain is a brook, the well a stream - who would thus express himself! We have thus neither an antithetic nor a synonymous (lxx after the phrase ἀναπηδῶν, Jerome, Venet., Luth.), but an integral distich before us; and this leads us to consider what depths of thought, what riches of contents, what power of spiritual and moral advancement, may lie in the words of a man.


Geneva Study Bible

The words of a man's mouth are as deep {d} waters, and the wellspring of wisdom as a flowing brook.

(d) Which can never be drawn empty, but always bring profit.


Wesley's Notes

18:4 A man's - A wise man's. As a brook - That wisdom which is in his heart is continually pouring forth wise and good counsels.


Jamieson-Fausset-Brown Bible Commentary

4. Wise speech is like an exhaustless stream of benefit.


Matthew Henry's Concise Commentary

18:4. The well-spring of wisdom in the heart of a believer, continually supplies words of wisdom. 5. The merits of a cause must be looked to, not the person. 6,7. What mischief bad men do to themselves by their ungoverned tongues! 8. How base are those that sow contention! and what fatal effects may be expected from small beginnings of jealousy! 9. Omissions of duty, and in duty, are fatal to the soul, as well as commissions of sin. 10,11. The Divine power, made known in and through our Lord Jesus Christ, forms a strong tower for the believer, who relies on the Lord. How deceitful the defence of the rich man, who has his portion and treasure in this world! It is a strong city and a high wall only in his own conceit; for it will fail when most in need. They will be exposed to the just wrath of that Judge whom they despised as a Saviour. 12. After the heart has been lifted up with pride, a fall comes. But honour shall be the reward of humility. 13. Eagerness, with self-conceit, will expose to shame. 14. Firmness of mind supports under many pains and trials. But when the conscience is tortured with remorse, no human fortitude can bear the misery; what then will hell be? 15. We must get knowledge, not only into our heads, but into our hearts. 16. Blessed be the Lord, who makes us welcome to come to his throne, without money and without price. May his gifts make room for him in our souls.


Matthew Henry's Whole Bible Commentary

Verse 4

The similitudes here seem to be elegantly transposed. 1. The well-spring of wisdom is as deep waters. An intelligent knowing man has in him a good treasure of useful things, which furnishes him with something to say upon all occasions that is pertinent and profitable. This is as deep waters, which make no noise, but never run dry. 2. The words of such a man's mouth are as a flowing brook. What he sees cause to speak flows naturally from him and with a great deal of ease, and freedom, and natural fluency; it is clean and fresh, it is cleansing and refreshing; from his deep waters there flows what there is occasion for, to water those about him, as the brooks do the low grounds.