John Gill - Exposition
John Gill
Fret not thyself because of evil [men],.... Because of their outward prosperity and worldly happiness, any more than rejoice at their adversity; neither do the one nor the other; where the one prevails, the other does also; by the frequent repetition of this advice, it looks as if this evil is what good men are prone to, and which was very common in Solomon's time, and in the time of his father...