Leviticus 26:17, 37

I will set My face against you so that you will be struck down before your enemies; those who hate you will rule over you, and you will flee when no one is pursuing you. [1 Sam 4:10; 31:1]

They shall stumble over one another as if to escape from a sword when no one is chasing them; and you will have no power to stand before your enemies.