Matthew Henry and continuators on Proverbs 28:2

2 For the transgression of a land many are the princes thereof: but by a man of understanding and knowledge the state thereof shall be prolonged.

Note, 1. National sins bring national disorders and the disturbance of the public repose: For the transgression of a land, and a general defection from God and religion to idolatry, profaneness, or immorality, many are the princes thereof, many at the same time pretending to the sovereignty and contending for it, by which the people are crumbled into parties and factions, biting and devouring one another, or many successively, in a little time, one cutting off another, as 1 Kings xvi. 8, &c., or soon cut off by the hand of God or of a foreign enemy, as 2 Kings xxiv. 5, &c. As the people suffer for the sins of the prince, Delirant reges, plectuntur Achivi— Kings play the madmen, and their people suffer for it,