| Geneva Study Bible Shall {n} iron break the northern iron and the steel? (n) As for the people, though they seemed strong as iron, yet they would not be able to resist the hard iron of Babylon, but would be led captives. Wesley's Notes 15:12 The northern iron - As the northern iron and steel is the hardest, and no iron could break that, so God having edged and hardened their enemies, the Chaldeans, all opposition to them would signify nothing. Jamieson-Fausset-Brown Bible Commentary 12. steel-rather, brass or copper, which mixed with "iron" (by the Chalybes near the Euxine Pontus, far north of Palestine), formed the hardest metal, like our steel. Can the Jews, hardy like common iron though they be, break the still hardier Chaldees of the north (Jer 1:14), who resemble the Chalybian iron hardened with copper? Certainly not [Calvin]. Henderson translates. "Can one break iron, (even) the northern iron, and brass," on the ground that English Version makes ordinary iron not so hard as brass. But it is not brass, but a particular mixture of iron and brass, which is represented as harder than common iron, which was probably then of inferior texture, owing to ignorance of modern modes of preparation. Matthew Henry's Concise Commentary 15:10-14 Jeremiah met with much contempt and reproach, when they ought to have blessed him, and God for him. It is a great and sufficient support to the people of God, that however troublesome their way may be, it shall be well with them in their latter end. God turns to the people. Shall the most hardy and vigorous of their efforts be able to contend with the counsel of God, or with the army of the Chaldeans? Let them hear their doom. The enemy will treat the prophet well. But the people who had great estates would be used hardly. All parts of the country had added to the national guilt; and let each take shame to itself. | 
