The cities of the south shall be shut up - Not only the cities of the north, the quarter at which the Chaldeans entered, but the cities of the south also; for he shall proceed from one extremity of the land to the other, spreading devastation every where, and carrying off the inhabitants.
Shall be shut up - Rather, “are shut up, and no man openeth them.” The cities of the Negeb, the southern district of Judah, are blockaded, with no one to raise the siege. The captivity was the inevitable result of the capture of the fortified towns. An army entering from the north would march along the Shefelah, or fertile plain near the seacoast, and would capture the outlying cities, before it attacked Jerusalem, almost inaccessible among the mountains.
Judah shall be - Translate, “Judah is ”