who gave himself as a ransom for all; the testimony in its own times;

 All the things in this chapter are mere temporary regulations to meet a given situation. If we want Paul's permanent view on this matter, we get it in Galatians 3:28: "There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female: for you are all one in Christ Jesus." In Christ the differences of place and honour and function within the Church are all wiped out. 