Jesus has commissioned believers to disciple

Matthew 28:19-20
19 Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20 and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age."

 

Acts 1:7-9
But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth."   After he said this, he was taken up before their very eyes, and a cloud hid him from their sight. 

 

Galatians 3:27-28
28 There is neither Jew nor Greek, slave nor free, male nor female, for you are all one in Christ Jesus.

Romans 16 speaks of diversity.

NIV