'Pursuer' in the Bible

"'As for the ones who remain among you, I will bring despair into their hearts in the lands of their enemies. The sound of a blowing leaf will pursue them, and they will flee as one who flees the sword and fall down even though there is no pursuer.

They will stumble over each other as those who flee before a sword, though there is no pursuer, and there will be no one to take a stand for you before your enemies.