Jeremiah 31:18

We have here, I. Ephraim's repentance, and return to God. Not only Judah, but Ephraim the ten tribes, shall be restored, and therefore shall thus be prepared and qualified for it, Hos 14:8. Ephraim shall say, What have I do to any more with idols? Ephraim the people, is here spoken of as a single person to denote their unanimity; they shall be as one man in their repentance and shall glorify God in it with one mind and one mouth, one and all. it is likewise thus expressed that it might be the better accommodated to particular penitents, for whose direction and encouragement this passage is intended. Ephraim is here brought in weeping for sin, perhaps because Ephraim, the person from whom that tribe had its denomination, was a man of a tender spirit, mourned for his children many days (Ch1 7:21, Ch1 7:22), and sorrow for sin is compared to that for an only son. This penitent is here brought in, 1. Bemoaning himself and the miseries of his present case. True penitents do thus bemoan themselves. 2. Accusing himself, laying a load upon himself as a sinner, a great sinner. He charges upon himself, in the first place, that sin which his conscience told him that he was more especially guilty of at this time, and that was impatience under correction: "Thou has chastised me; I have been under the rod, and I needed it, I deserved it; I was justly chastised, chastised as a bullock, who would never have felt the goad if he had not first rebelled against the yoke." True penitents look upon their afflictions as fatherly chastisements: "Thou hast chastised me and I was chastised; that is, it was well that I was chastised, otherwise I should have been undone; it did me good, or at least was intended to do me good; and yet I have been impatient under it." Or it may intimate his want of…

31:18-19 Israel was now repenting of its sins and humbly asking for restoration; the people realized that they had no power to redeem themselves. They were turning away from idols and affirming that God alone is the Lord.