The abstract noun "horror" can be stated using the verb "horrified." Alternate translation: "The people passing by will be horrified when they what happened to Edom" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
The word "hiss" refers to a sound that shows horror or awe. Alternate translation: "shake from fear and gasp" (See: [[rc://en/ta/man/translate/translate-symaction]])