Cross reference
Joel 2:29
29 and also upon the servants and upon the handmaids in those days will I pour out my Spirit.
1 Corinthians 12:13
13 For in one Spirit were we all baptized into one body, whether Jews or Greeks, whether bond or free; and were all made to drink of one Spirit.
Galatians 3:28
28 There can be neither Jew nor Greek, there can be neither bond nor free, there can be no male and female; for ye all are one `man' in Christ Jesus.
Colossians 3:11
11 where there cannot be Greek and Jew, circumcision and uncircumcision, barbarian, Scythian, bondman, freeman; but Christ is all, and in all.