ייִדישער מחשבֿה אויף תהילים 46:3

When [David] (Ps. 60:4) describes how, during the expedition of Joab against the Edomites, the nation was low and weak, and how he prayed to God for His assistance, he says: “Thou hast made the earth to tremble; thou hast broken it: heal the breaches thereof: for it shaketh.” In another instance he expresses the idea that we need not fear when we see other nations die and perish, because we rely on God’s support, and not on our sword and strength, in accordance with the words: “A people saved by the Lord, the shield of thy help” (Deut. 33:29); he says (Ps. 46:2): “Therefore will we not fear, though the earth be removed, and though the mountains be shaken in the midst of the sea.”