John Calvin Commentary Jeremiah 8:21

"For the hurt of the daughter of my people am I hurt: I mourn; dismay hath taken hold on me." — Jeremiah 8:21 (ASV)

As the hardness of the people was so great that the threats we have observed did not touch them, the Prophet now ascribes to himself what he had before attributed to them. We then see how the Prophet varies his mode of speaking; but it was necessary, for he was at a loss to find a way to address them sufficiently strong to penetrate into their stony and even iron hearts. We need not wonder, then, that there are so many figurative terms used by the Prophet; for it was necessary to set before them God’s judgment in various ways, that the people might be awakened out of their torpid state.

He then says, that he was bruised for the bruising of his people. He was no doubt ridiculed by most of them: “Oh! You grieve for your own evils; it is well and prosperous with us: who has asked you for this pity? Do not think, then, that you can gain any favor with us, for we are contented with our lot. Weep rather for your own calamities, if you have any at home; but let us at the same time enjoy our pleasures, since God is propitious and indulgent to us.” Thus then was the Prophet derided; but yet he warns the obstinate people, that they might be less excusable: he says, that he was rendered black; for sorrow brings blackness with it, and darkens the face of man: it is a metaphorical expression. He says at last, that he was astonished. The astonishment with which he was seized he no doubt sets down as being the opposite of the people’s torpor and insensibility, for they had no fear for themselves.