@mariela God adopts those who are born again as their children. Their situation is similar to that of those who have been legally adopted, since they change their status and become part of the family of God
Why is it necessary for a person to be born again?
Jesus said: "Unless one is born again, he can not see the kingdom of God" (John 3: 3). So "being born again" prepares a person to be king with Christ in the Kingdom of God, who rules from heaven. Therefore, the Bible presents the "new birth" as the opportunity to receive an inheritance that "is reserved in heaven"