Jeremiah 4:28,29

For this shall the earth mourn, &c. More expressions to set forth the dreadfulness of the judgment: he makes the elements to personate mourners. And the heavens above be black Under sad calamities every thing looks dismal; even the heavens themselves do not seem to shine with their usual brightness. Because I have spoken it, I have purposed it, &c. Blaney, following the LXX., changes a little the order of the words, and reads, “I have spoken, and do not repent: I have purposed, and will not recede from it.” God's purpose of delivering up the Jews into the hands of Nebuchadnezzar was irreversible, because he foresaw that the greatest part of them would continue impenitent, and that it would be expedient and necessary, in order to their being humbled and brought to repentance, that they should be carried into captivity. Otherwise the removal of judgments, either those inflicted or threatened to be inflicted, is promised upon repentance, to which God frequently exhorted these Jews by his prophets. The whole city shall flee The inhabitants of all ranks and qualities shall seek to escape the fury of the Chaldean army, chap. Jeremiah 39:4. They shall go into thickets Either upon the report of the coming of their enemies, the prophet hereby, as it were, deriding their confidence, or rather at the approach of their vast armies: for they were closely besieged before they fled, as appears 2 Kings 25:4. Such a consternation there shall be upon them, that they shall run into every hole to hide themselves; thus Manasseh was taken among the thorns, 2 Chronicles 33:11. The Hebrew is, באו בעבים, they shall go into the clouds; meaning, probably, dark places on the tops of hills, reaching, as it were, to the clouds, or among the cloudy shades of trees and groves that usually grew there. The LXX. render it, εισεδυσαν εις τα σπηλαια, they entered into the caves; adding, και εις τα αλση εκρυβησαν, they were hid in the groves. And climbed up upon the rocks Namely, to save their lives. Every city shall be forsaken There shall be an utter desolation, their cities being quite deserted, and none left to inhabit them.