Prov 16:22

“Intelligence is a fountain of life to one who has it lit. a fountain of life is the intelligence of its possessor. And this is the interpretation of the verse: The intelligence of the one who has it is a fountain of life to him. but the chastisement of the fools is folly But the chastisement of the fools comes to them because of folly. And this is the apparent meaning: Folly is chastisement to the fools.”

“Note, 1. There is always some good to be gotten by a wise and good man: His understanding is a well-spring of life to him, which always flows and can never be drawn dry; he has something to say upon all occasions that is instructive, and of use to those that will make use of it, things new and old to bring out of his treasure; at least, his understanding is a spring of life to himself, yielding him abundant satisfaction; within his own thoughts he entertains and edifies himself, if not others. 2. There is nothing that is good to be gotten by a fool. Even his instruction, his set and solemn discourses, are but folly, like himself, and tending to make others like him. When he does his best it is but folly, in comparison even with the common talk of a wise man, who speaks better at table than a fool in Moses's seat.”

“Understanding is a wellspring of life unto him that hath it,.... "The master" or "owner of it" (k). As he only is to whom an understanding is given; for, whatever understanding men may have of natural and civil things, they have none of things spiritual and divine, unless it be given them by Christ. This is no other than the grace of the Spirit of God, who is a spirit of wisdom and revelation in the knowledge of Christ; and this is a well of living water, springing up unto everlasting life, and it issues in it; with the knowledge of Christ, and God in Christ, eternal life is connected, Joh 4:14; and as this knowledge and understanding of things is communicated by wise and knowing men, they are the means and instruments of the spiritual life of those to whom they minister, and are made useful; but the instruction of fools is folly; the best instruction they are capable of giving is downright folly, and issues in death. (k) "domini sui", Pagninus; "domino suo", Mercerus, Gejerus; "dominorum suorum", Michaelis.”

“22 A fountain of life is understanding to its possessor; But the correction of fools is folly. Oetinger, Bertheau, and others erroneously understand מוּסר of the education which fools bestow upon others; when fools is the subject spoken of, מוּסר is always the education which is bestowed on them, Pro 7:22; Pro 1:7; cf. Pro 5:23; Pro 15:5. Also מוסר does not here mean education, disciplina, in the moral sense (Symmachus, ἔννοια; Jerome, doctrina): that which fools gain from education, from training, is folly, for מוסר is the contrast to מקור חיּים, and has thus the meaning of correction or chastisement, Pro 15:10, Jer 30:14. And that the fruits of understanding (Pro 12:8, cf. שׂכל טוב, fine culture, Pro 13:15) represented by מקור חיים (vid., Pro 10:11) will accrue to the intelligent themselves, is shown not only by the contrast, but also by the expression: Scaturigo vitae est intellectus praeditorum eo, of those (= to those) who are endowed therewith (The lxx well, τοῖς κεκτημένοις). The man of understanding has in this intellectual possession a fountain of strength, a source of guidance, and a counsel which make his life secure, deepen, and adorn it; while, on the contrary, folly punishes itself by folly (cf. to the form, Pro 14:24), for the fool, when he does not come to himself (Psa 107:17-22), recklessly destroys his own prosperity.”