"God put the world square with himself through the Messiah, giving the world a fresh start by offering forgiveness of sins. God has given us the task of telling everyone what he is doing." MSG
The world = the kosmos =
The universe.
The ungodly multitude.
The whole mass of alienated mankind.
Reconciling = katallasso =
Changing/ exchanging those at variance.
Return to favour with God.
Our God specializes in katallasso.
His long range Plan has been conceived within Himself with consultation with none of His created ones.