Matthew Henry Commentary Proverbs 22:22-23

"Rob not the poor, because he is poor; Neither oppress the afflicted in the gate: For Jehovah will plead their cause, And despoil of life those that despoil them." — Proverbs 22:22-23 (ASV)

He who robs and oppresses the poor does so at his peril. And if people will not come to their aid, God will.