Charles Spurgeon Commentary Jeremiah 4:8-9

"For this gird you with sackcloth, lament and wail; for the fierce anger of Jehovah is not turned back from us. And it shall come to pass at that day, saith Jehovah, that the heart of the king shall perish, and the heart of the princes; and the priests shall be astonished, and the prophets shall wonder." — Jeremiah 4:8-9 (ASV)

Universal fear would take hold of them. If they would not rightly fear the Lord and turn to Him, the time would come when, without exception, the greatest and the wisest of them would be overcome by a sudden panic.