Albert Barnes Commentary Jeremiah 13:19

"The cities of the South are shut up, and there is none to open them: Judah is carried away captive, all of it; it is wholly carried away captive." — Jeremiah 13:19 (ASV)

Shall be shut up - Rather, are shut up, and no man opens 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 ...