Deuteronomy 28:52

And he shall besiege thee in all thy gates, every city in the entire land, until thy high and fenced walls, solid and fortified as they are, come down, wherein thou trustedst, throughout all thy land; and he shall besiege thee in all thy gates through out all thy land, which the Lord, thy God, hath given thee. The campaign is thus described as being both comprehensive and exhaustive. To such extremities would the people be reduced that the means resorted to for the purpose of maintaining life would be almost unbelievably horrible.