'Unannounced' in the Bible

Three days later, while they were still in pain, Jacob's sons Simeon and Levi, two of Dinah's brothers, each grabbed a sword and entered the city unannounced, intending to kill all the males.

his form was so marred he no longer looked human -- so now he will startle many nations. Kings will be shocked by his exaltation, for they will witness something unannounced to them, and they will understand something they had not heard about.