Psalms 37:9

“BETH. Wherewith shall a young man cleanse his way? etc.] Some think David means himself, and that he was a young man when he wrote this psalm; and which they think is confirmed by (<19B9100>Psalm 119:100); but neither of them seem conclusive; rather any young man is meant, and who is particularly mentioned, because young men are liable to sins and snares, to carnal lusts and sensual pleasures, which are of a defiling nature. Some are of opinion that a young man, or babe in Christ, is intended, that needs direction in his way, and instruction about the manner of cleansing it. But the former sense seems best, and expresses the concern of the psalmist for the education and right information of…”

“Two reasons: The prosperity of the wicked is short; and the pious, by humble trust, will secure all covenant blessing, denoted here by "inherit the earth" (compare Psa 25:13).”

“For evil-doers shall be cut off - See Psalms 37:2. This will be the termination of their course. They shall not ultimately prosper. God will order all things in equity, and though such men now seem to be prosperous, and to be the objects of the divine favor, yet all this is temporary. The day of retribution will certainly come, and they will be dealt with as they deserve. The reference here probably is to judgment in this life, or to the fact that God will, as a general law, show his disapprobation of the course of the wicked by judgments inflicted on them in this world. See Psalms 55:23, “Bloody and deceitful men shall not live out half their days.” Proverbs 10:27, “the years of the wicked…”

“The earth - This for the most part was literally fulfilled in that state of the church. Psalms 37:10”

“37:9-11 The wicked will not possess the land; those who trust in the Lord will. The Lord promises an inheritance because he is committed to caring for his people.”

“evildoers: Psa 37:35, Psa 37:36, Psa 55:23; Job 20:23-29, Job 27:13, Job 27:14-23 inherit: Psa 37:11, Psa 37:12, Psa 37:29, Psa 25:13; Isa 58:14, Isa 60:21; Heb 11:16; Rev 5:10 the earth: Or, "the land," airetz, probably the land of Judea, given by God himself as an inheritance to their fathers, and their posterity forever, and this verse seems to contain a promise of their return thither. Psalms 37:10”