Psalms 72:3,4 - Joseph Benson’s Commentary on the Old and New Testaments

The mountains, &c. Which are so dangerous to passengers, on account of robbers or wild beasts, which commonly abide there; shall bring forth peace Shall be travelled over, or inhabited, with perfect security and safety. Or peace is here put for that prosperity, ease, and plenty, which is the fruit of peace; when the mountains and hills are cultivated and tilled, and so are capable of producing abundance of grain, though naturally full of stones and barren. He shall judge the poor of the people That is, vindicate them from their potent oppressors, as judging often means. He shall save the children of the needy Whom the rich had, or would have seized upon, for bond-men, upon some pretence or other.