Adam Clarke's Commentary on the Bible - Psalms 37:1
Fret not thyself because of evil doers - It is as foolish as it is wicked to repine or be envious at the prosperity of others. Whether they are godly or ungodly, it is God who is the dispenser of the bounty they enjoy; and, most assuredly, he has a right to do what he will with his own. To be envious in such a case, is to arraign the providence of God. And it is no small condescension in the Almighty to reason with such persons as he does in this Psalm. read more
John Gills Exposition of the Bible Commentary - Psalms 37:9
For evildoers shall be cut off ,.... Though they flourish for a while, they shall be cut down like the grass or flower of the field, or they shall be cut off as branches from a flourishing tree; they shall be cut off from the earth, and rooted out of it by death or some desolating judgment; see Proverbs 2:22 ; and therefore not to be envied and fretted at; but those that wait upon the Lord shall inherit the earth ; such who attend his word, worship, and ordinances; obey his commands,... read more