Commentaries:
Barnes' Notes
The steel - " brass," i. e., bronze. By the "iron" is meant Jeremiah' s intercession; but this cannot alter the divine purpose to send Judah into exile, which is firm as steel and brass. For "brass" see Exodus 25:3 note. The alloy of copper and zinc now called brass was entirely unknown to the ancients.
Other Barnes' Notes entries containing Jeremiah 15:12:
Isaiah 52:13-15
Daniel 7:7-8
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