In the forts — is rather, in the natural fastnesses in which the land abounded.
Related Commentaries of Ezekiel 33:27
Ezekiel 33:27
27 Say thou thus unto them, Thus saith the Lord GOD; As I live, surely they that are in the wastes shall fall by the sword, and him that is in the open field will I give to the beasts to be devoured, and they that be in the forts and in the caves shall die of the pestilence.