At that time it will be said to this people and to Jerusalem, “A hot wind from the bare heights in the desert toward the daughter of my people, not to winnow or cleanse,
Jeremiah proceeds with the same prediction: he says, that a terrible wind was coming, which would not only disperse or clear away, but dissipate and overthrow all things. He then expresses how great and how grievous would be the calamity which he had before mentioned.
God's usual method is to warn before he wounds. In these verses, accordingly, God gives notice to the Jews of the general desolation that would shortly be brought upon them by a foreign invasion. This must be declared and published in all the cities of Judah and streets of Jerusalem, that all might hear and fear, and by this loud alarm be either brought to repentance or left inexcusable.
Commenting on Jeremiah 4:5-18
At that time shall it be said to this people, and to Jerusalem,.... The inhabitants of Judea and Jerusalem, the people of the Jews; or "concerning" (x) them, as Jarchi interprets it: a dry wind of the high places in the wilderness toward the daughter of my people.