Proverbs 25:26 - Joseph Benson’s Commentary on the Old and New Testaments

A righteous man falling down before the wicked, &c. When a righteous man is either allured or terrified into any sinful practice by wicked men, or into any base and servile compliance with their habits and customs, he, who by his excellent example and counsels was like a fountain, or well of life, (as the mouth of the righteous is termed, Proverbs 10:11,) sending forth refreshing streams for the benefit of many, is now corrupted and rendered useless. Or, the meaning may be, When righteous men are oppressed by the wicked, the state of that commonwealth is as deplorable as if the public fountains, from which all the people fetched their water, were corrupted, and it is a sign that the fountains of justice are poisoned.