Albert Barnes Commentary Psalms 147:6

"Jehovah upholdeth the meek: He bringeth the wicked down to the ground." — Psalms 147:6 (ASV)

The Lord lifts up the meek — The humble; the poor; the bowed down; the oppressed. See the notes at Psalms 146:8: “The Lord raiseth them that are bowed down.”

He casts the wicked down to the ground — See the notes at Psalms 146:9: “The way of the wicked he turneth upside down.”