Cross reference
Joel 2:29
29 And also on the servants and on the handmaids in those days, I will pour out my Spirit.
1 Corinthians 12:13
13 For in one Spirit we were all baptized into one body, whether Jews or Greeks, whether bond or free; and were all given to drink into one Spirit.
Galatians 3:28
28 There is neither Jew nor Greek, there is neither slave nor free man, there is neither male nor female; for you are all one in Christ Jesus.
Colossians 3:11
11 where there can't be Greek and Jew, circumcision and uncircumcision, barbarian, Scythian, bondservant, freeman; but Christ is all, and in all.