Matthew Henry Commentary Proverbs 10:21-22

"The lips of the righteous feed many; But the foolish die for lack of understanding. The blessing of Jehovah, it maketh rich; And he addeth no sorrow therewith." — Proverbs 10:21-22 (ASV)

The precept to love even our enemies is an Old Testament commandment. Our Saviour has shown his own great example in loving us when we were enemies.

The godly in the land will be quiet in the land. There may be cause to change for the better, but have nothing to do with those who are given to change.