Proverbs 16:32

This recommends the grace of meekness to us, which will well become us all, particularly the hoary head, Pro 16:31. Observe, 1. The nature of it. it is to be slow to anger, not easily put into a passion, nor apt to resent provocation, taking time to consider before we suffer our passion to break out, that it may not transgress due bounds, so slow in our motions towards anger that we may be quickly stopped and pacified. It is to have the rule of our own spirits, our appetites and affections, and all our inclinations, but particularly our passions, our anger, keeping that under direction and check, and the strict government of religion and right reason. We must be lords of our anger, as God is, Nah 1:3. Aeolus sis, affectuum tuorum - Rule your passions, as Aeolus rules the winds. 2. The honour of it. He that gets and keeps the mastery of his passions is better than the mighty, better than he that by a long siege takes a city or by a long war subdues a country. Behold, a greater than Alexander or Caesar is here. The conquest of ourselves, and our own unruly passions, requires more true wisdom, and a more steady, constant, and regular management, than the obtaining of a victory over the forces of an enemy. A rational conquest is more honourable to a rational creature than a brutal one.

— Matthew Henry's Concise Commentary (public domain)

(Compare Pro 14:29). taketh a city--that is, by fighting.

— Jamieson-Fausset-Brown Commentary (public domain)