Bede

Open your mouth, judge justly, etc. Just as in the previous verse he commanded to open the mouth for the cause and liberation of the poor, so in this one he admonishes to justly chastise and judge the poor themselves when they err. As Moses also said: "You shall not show pity in the judgment of the poor" (Exodus 23); which the prophet suggests is done by the Lord when he says: "He will judge the poor with righteousness, and decide with equity for the meek of the earth" (Psalm 72).

Commentary on Proverbs ↗