31:18-20 Ephraim (the ten tribes) is weeping for sin. He is angry at himself for his sin, and folly, and frowardness. He finds he cannot, by his own power, keep himself close with God, much less bring himself back when he is revolted. Therefore he prays, Turn thou me, and I shall be turned. His will was bowed to the will of God. When the teaching of God's Spirit went with the corrections of his providence, then the work was done. This is our comfort in affliction, that the Lord thinks upon us. God has mercy in store, rich mercy, sure mercy, suitable mercy, for all who seek him in sincerity.

19. after that I was turned, I repented—Repentance in the full sense follows, not precedes, our being turned to God by God (Zec 12:10). The Jews' "looking to Him whom they pierced" shall result in their "mourning for Him." Repentance is the tear that flows from the eye of faith turned to Jesus. He Himself gives it: we give it not of ourselves, but must come to Him for it (Ac 5:31).

instructed—made to learn by chastisement. God's Spirit often works through the corrections of His providence.

smote upon … thigh—(Eze 21:12). A token of indignant remorse, shame, and grief, because of his past sin.

bear … reproach of … youth—"because the calamities which I bore were the just punishment of my scandalous wantonness against God in my youth"; alluding to the idols set up at Dan and Beth-el immediately after the ten tribes revolted from Judah. His sense of shame shows that he no longer delights in his sin.