Isaiah 31:6

On the ground of this half terrible, half comforting picture of the future, the call to repentance is now addressed to the people of the prophet's own time. "Then turn, O sons of Israel, to Him from whom men have so deeply departed." Strictly speaking, "to Him with regard to whom (אשׁר) ye are deeply fallen away" (he‛ĕmı̄q, as in Hos 9:9, and sârâh, that which is alienated, alienation, as in Isa 1:5); the transition to the third person is like the reverse in Isa 1:29. This call to repentance the prophet strengthens by two powerful motives drawn from the future.

This explains the foregoing promise of the deliverance of Jerusalem; she shall be fitted for deliverance, and then it shall be wrought for her; for in that method God delivers. I. Jerusalem shall be reformed, and so she shall be delivered from her enemies within her walls, Isa 31:6, Isa 31:7. Here is, 1. A gracious call to repentance. This was the Lord's voice crying in the city, the voice of the rod, the voice of the sword, and the voice of the prophets interpreting the judgment: "Turn you, O turn you now, from your evil ways, unto God, return to your allegiance to him from whom the children of Israel have deeply revolted, from whom you, O children of Israel! have revolted." He reminds them of their birth and parentage, that they were children of Israel, and therefore under the highest obligations imaginable to the God of Israel, as an aggravation of their revolt from him and as an encouragement to them to return to him. "They have been backsliding children, yet children; therefore let them return, and their backslidings shall be healed. They have deeply revolted, with great address as they supposed (the revolters are profound, Hos 5:2); but the issue will prove that they have revolted dangerously. The stain of their sins has gone deeply into their nature, not to be easily got out, like the blackness of the Ethiopian. They have deeply corrupted themselves (Hos 9:9); they have sunk deep into misery, and cannot easily recover themselves; therefore you have need to hasten your return to God." 2. A gracious promise of the good success of this call (Isa 31:7): In that day every man shall cast away his idols, in obedience to Hezekiah's orders, which, till they were alarmed by the Assyrian invasion, many refused to do. That is a happy fright which frightens us from our sins.…