Jerome : "The iniquity of Ephraim is bound up; his hidden sin is enfolded. Pangs of childbirth come for him, but he is an unwise son, for now he does not present himself at the opening of the womb." LXX: "The congregation of iniquity of Ephraim; his sin is concealed. Labor pains shall come upon him as of a woman giving birth. This is your wise son, for he will not now be able to stand the test of the sons' contrition." Just as something that is bound in the world is preserved and does not perish for the one to whom it is bound, so every iniquity by which Ephraim sinned against God is bound to him and hidden as if reserved in a pouch. Finally, when the day of vengeance arrives, and the ultimate captivity, pains like those of a woman in labor will come to him, whether they seize him. A woman in labor, long before giving birth, from the time she conceives, knows that she is going to give birth, and she expects daily that extreme torments and pains will come. So also Ephraim, the foolish son of whom we have said above, "Ephraim is a foolish dove without a heart in contrition" of "his children and his people," when the day of delivery and captivity arrives, will not be able to stand or suffer. For the 'Foolish Son,' it is read ironically in the LXX: 'This is the wise son,' that is, whom you thought wise, so that on the contrary, he may be understood as foolish. But for all heretics, iniquity is gathered, which they spoke on high; and their sin is hidden when they think they are hiding the poison of their hearts and having secrets, which, when the day of delivery comes, will be exposed by pain and effort. This foolish son is Ephraim, because he abandoned the wisdom of God, of whom it is written in Jeremiah: 'His last shall be foolish,' and he will not be able to withstand the wrath of God, in the overthrow of his sons whom he has slain and killed. — Commentary on Hosea 13:12-13