John Gill Commentary Proverbs 28:7

"Whoso keepeth the law is a wise son; But he that is a companion of gluttons shameth his father." — Proverbs 28:7 (ASV)

Whoso keeps the law [is] a wise son
That observes the law of God; for, though he cannot perfectly keep it, yet he delights in it after the inward man; and with his spirit serves it, from a principle of love, in faith, and with a view to the glory of God, without mercenary and sinister ends. Such a man enjoys peace, and has a reward "in" though not "for" keeping the commands of it; so that it is his wisdom to observe it; and he may be truly called a wise man, (Deuteronomy 4:6) ; Or that observes the law or commandments of his parents, which they enjoin him; see (Proverbs 6:20Proverbs 6:21) ; and particularly the law of God, which requires honour and obedience to be given to parents, and which turns to the account of children; it is well with them, and their days are prolonged on earth, and therefore they are wise that keep it, (Ephesians 6:1–3) ; and such a wise son makes a glad father, as the contrary brings shame to him, as in the next clause;

but he that is a companion of riotous [men] shameth his father :
that keeps company with gluttons, and indulges his sensual appetite with them; that "feeds" ^F4 such persons and himself, as some render the word; that gives up himself to an epicurean life: he brings himself at last to disgrace and poverty, and so causes shame to his father; who will be charged with neglecting his education, and indulging him in such a luxurious way of living; see (Proverbs 10:5) (29:15) .

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FOOTNOTES:

• F4: (her) "qui pascit", V. L. Pagninus, Piscator, Gejerus, Schultens; "pascitar", Michaelis; "pascens", Montanus.