you

The word "you" refers to the people of Ammon.

this terror will come from all those who surround you. Each one of you will be scattered before it

The abstract noun "terror" can be stated as the verb "terrify." The phrase "will be scattered" can be stated in active form. AT: "I will cause all those around you to terrify you. Each one of you flee to different directions" (See: rc://en/ta/man/translate/figs-abstractnouns and rc://en/ta/man/translate/figs-activepassive)