In Galatians 3:28 God, through the apostle Paul, makes very clearThere is neither Jew nor Greek, slave nor free, male nor female, for you are all one in Christ Jesus.
God was stating that even though man considered these differences listed above, slave and free, Jew and Greek to be insurmountable, He would tolerate non of it. In Christ Jesus all mankind were on an equal footing. This is a consistent message throughout the New Testament.
Dr Martin Luther King agreed with this principal when he stated I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin, but by the content of their character.