John Gill Commentary Proverbs 19:10

"Delicate living is not seemly for a fool; Much less for a servant to have rule over princes." — Proverbs 19:10 (ASV)

Delight is not seemly for a fool Such an one as Nabal, whose name and nature were alike; and whose prosperity ill became him, and the mirth and delight he had in it, (1 Samuel 25:25 1 Samuel 25:36) ; for, as the wise man elsewhere says, "the prosperity of fools shall destroy them", (Proverbs 1:26) ; they do not know how to make a right use of their prosperity; nor to moderate their enjoyments, pleasures, and delights. Some understand this of spiritual delight in the Lord; in his ways and ordinances, which wicked men are strangers to: and a very uncomely thing it is for such persons to talk of spiritual joy and delight, and of their communion with God, when they live in sin;

much less for a servant to have rule over princes ; this was a sight which Solomon had seen, but was very disagreeable to him; and was one of the four things the earth cannot bear; the insolence of a servant, when he becomes master over his superiors, is intolerable; see (Proverbs 30:22) (Ecclesiastes 10:7) . It may be spiritually applied to such who are servants of sin; to whose sensual appetites and carnal affections the more noble and princely powers of the soul, the understanding and mind, become subject; which is very improper and unseemly.