After everything has been put under the Son, then he will put himself under God, who had put all things under him. Then God will be the complete ruler over everything.
In the new life there is no difference between Greeks and Jews, those who are circumcised and those who are not circumcised, or people who are foreigners, or Scythians. There is no difference between slaves and free people. But Christ is in all believers, and Christ is all that is important.