Isaiah 9 - 10

Even though there would be great calamity, God would still protect and provide for those who looked to Him for guidance and protection.  The government of this future promised Son (the Jewish Messiah) is described as one of prosperity, peace and longevity.  Those who sought to rebuild in their own strength would be brought to nothing; such is the price to those who seek to operate without God's leadership and blessing.  Indeed, God will come and bring destruction to those nations who seek to not only undermine His authority, but also eliminate His people.  Those who come to attack and plunder need not be feared for one day they, too, will be conquered and God's people will still remain.