Leviticus 26:35-36

35All the time that it lies desolate, the land will have the rest it did not have during the sabbaths you lived in it.

36“ ‘As for those of you who are left, I will make their hearts so fearful in the lands of their enemies that the sound of a windblown leaf will put them to flight. They will run as though fleeing from the sword, and they will fall, even though no one is pursuing them.