Matthew Henry and continuators on Proverbs 29:2

2 When the righteous are in authority, the people rejoice: but when the wicked beareth rule, the people mourn.

This is what was said before, ch. xxviii. 12, 28. 1. The people will have cause to rejoice or mourn according as their rulers are righteous or wicked; for, if the righteous be in authority, sin will be punished and restrained, religion and virtue will be supported and kept in reputation; but, if the wicked get power in their hands, wickedness will abound, religion and religious people will be persecuted, and so the ends of government will be perverted. 2. The people will actually rejoice or mourn according as their rulers are righteous or wicked. Such a conviction are even the common people under of the excellency of virtue and religion that they will rejoice when they see them preferred and countenanced; and, on the contrary, let men have ever so much honour or power, if they be wicked and vicious, and use it ill, they make themselves contemptible and base before all the people (as those priests, Mal. ii. 9) and subjects will think themselves miserable under such a government.