'Fenced Cities' in the Bible

But we ourselves will go ready armed before the children of Israel, until we have brought them unto their place. And our children shall dwell in the fenced cities, because of the inhabiters of the land.

Bethnimra and Bethharan fenced cities, and they built folds for their sheep.

This people shall eat up thy fruit and thy meat; yea, they shall devour thy sons and thy daughters, thy sheep and thy bullocks. They shall eat up thy grapes and figs. As for thy strong and well-fenced cities, wherein thou didst trust, they shall destroy them with the sword.

So the king of the north shall come to lay siege, and to take the strong fenced cities: And the power of them of the south shall not be able to abide him, and the best men of the people shall not be so strong as to resist him.