Psalms 37:3 - Joseph Benson’s Commentary on the Old and New Testaments

Trust in the Lord Depend upon God's promise for thy protection and support, for their infidelity is the root of their wickedness. And do good Continue in the practice of that which is good and well- pleasing to God. So shalt thou dwell in the land That is, upon this condition thou shalt dwell in safety and quietness in Canaan, as God had often promised. Hebrew, שׁכן ארצ, dwell in the land, as if it were a command to abide in Canaan when troubles came, and not to flee to the Philistines or other heathen for shelter, as he had foolishly done. But it is rather a promise, as appears by comparing this with Psalms 37:27; Psalms 37:29, such promises being often expressed by imperative verbs put for futures. And verily thou shalt be fed Hebrew, רעה אמונה, feed, or, thou shalt be fed, (that is, every way provided for,) in truth, that is, truly or assuredly; or with, or by faith, as this word signifies; that is, by thy trusting in the Lord: thou shalt live by faith, as is said Habakkuk 2:4.