'Startle' in the Bible

I will come upon him while he [is] weary and {weak}. I will startle him, and all of the people who [are] with him will flee. Then I will strike down the king [while] he [is] alone.

so will he startle many nations. Kings will shut their mouths at him; for what had not been told them they will see, and what they had not heard they will understand.