C. F. Keil and Franz Delitzsch on Jeremiah 13:23-24

Jer 13:23-24

Judah will not escape this ignominious lot, since wickedness has so grown to be its nature, that it can as little cease therefrom and do good, as an Ethiopian can wash out the blackness of his skin, or a panther change it spots. The consequential clause introduced by גּם אתּם connects with the possibility suggested in, but denied by, the preceding question: if that could happen, then might even ye do good. The one thing is as impossible as the other. And so the Lord must scatter Judah among the heathen, like stubble swept away by the desert wind, lit., passing by with the desert wind. The desert wind is the strong east wind that blows from the Arabian Desert; see on Jer 4:11.