In these passages Isaiah continues to prophesy about God’s coming judgment upon Israel and upon the whole world. All nations will be held accountable for their sins. In the end times there will be much death and destruction, as God’s judgment comes upon the Earth.
Isaiah speaks of a remnant who will survive. Evidently there will be a few in each nation who will not be destroyed. They are those who do not turn away from God. These people will live in Jesus’ Millennial Kingdom.
The Bible says that during Jesus’ Millennial Kingdom, people from all nations will travel to Jerusalem to worship God and learn from Jesus. Wars will cease, and all will live in peace.
The Bible says that Satan will be placed in bondage during this time so that he cannot influence mankind to do evil. The Bible also says that Satan will be released at the end of Jesus’ 1000 year reign. He will again be allowed to influence and deceive those who will be deceived. So, there will be a final ‘sifting’ of mankind. Then will come the ‘great throne judgment’ of God. God will determine who will go to Heaven and who will go to Hell.