Amos 6:9 & 10
"If ten people are left in one house, they too will die. And if the relative who comes to carry the bodies out of the house to burn them asks anyone who might be hiding there, 'Is anyone else with you?' and he says, 'No,' then he will go on to say, 'Hush! We must not mention the name of the Lord.'" NIV translation
The judgment will be so terrible that, if any survive, they will be afraid to even mention the name of God. The purpose of the judgment is to plant the fear of God into the people's hearts. The purpose of the fear is to bring them to repentance so that they might be saved.