Albert Barnes Commentary Psalms 37:27

"Depart from evil, and do good; And dwell for evermore." — Psalms 37:27 (ASV)

Depart from evil, and do good — This is the sum of all that is said in the psalm; the great lesson taught and reinforced by all these references to the effects of good and evil conduct. All these results—all that people experience themselves, and all the effects of their conduct on their posterity—reinforce the great practical lesson that we should do good and avoid evil. These results of conduct are among the means God uses to encourage people to do right and to abstain from what is wrong.

And dwell for evermore — This means to dwell in the land, signifying (in accordance with the overall message of the psalm) that righteousness will be connected with length of days and with prosperity, and that its effects will be permanent on a family, passing down from one generation to another. See the notes at Psalm 37:3.