That everything God made would be made free from ruin (decay). There was hope that everything God made would have the freedom and glory that belong to God’s children.
But Jesus must stay in heaven until the time when all things will be made right again. God told about this time when he spoke long ago through his holy prophets.
Everything that God made is waiting with excitement for the time when God will show the world who his children are. The whole world wants very much for that to happen.
God planned for those people to be like his Son. And he called (chose) those people. God called those people and made them right with him. And God gave his glory to those people that he made right.
It is the same with the dead people who are raised to life. The body that is “planted” will ruin and decay. But that body is raised to a life that cannot be destroyed.
The words “once again” clearly show us that everything that was made will be destroyed. Those are the things that can be shaken. And only the things that cannot be shaken will continue.