Job 40:18
His bones are pipes of brass, his legs are like rods of iron.
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Job 40:6
Then the Lord made answer to Job out of the storm-wind, and said,
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Job 41:24
His heart is as strong as a stone, hard as the lower crushing-stone.
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Job 41:27
Iron is to him as dry grass, and brass as soft wood.
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Isaiah 48:4
Because I saw that your heart was hard, and that your neck was an iron cord, and your brow brass;
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