This can be restated to remove the abstract nouns "fear" and "torment." AT: "because they will be afraid of God tormenting them they way he torments her" or "because they will be afraid of suffering the way she is suffering" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
# weeping and mourning loudly
This is what the merchants will be doing. AT: "and they will weep and mourn loudly"