This continues the prophecy about the people of Moab. God describes events that will happen in the future as if it is happening in the present. (See: [Isaiah 15:1-2](./01.md))
Physical trembling is a symptom of fear and represents fear. AT: "they will be completely filled with fear" or "they tremble with fear" (See: [[rc://en/ta/man/translate/figs-metonymy]])