The words "amazed" and "astonished" share similar meanings. Together they emphasize the strength of the emotion. Alternate translation: "be very amazed" (See: [[rc://en/ta/man/translate/figs-doublet]])
This can be stated in active form. Alternate translation: "when someone reports it to you" or "when you hear about it" (See: [[rc://en/ta/man/translate/figs-activepassive]])