1 Corinthians 7:22

7:22 For the one who was called in the Lord as a slave is the Lord’s freedman. In the same way, the one who was called as a free person is Christ’s slave.

1 Corinthians 7:39

7:39 A wife is bound as long as her husband is living. But if her husband dies, she is free to marry anyone she wishes (only someone in the Lord).

1 Corinthians 9:18

9:18 What then is my reward? That when I preach the gospel I may offer the gospel free of charge, and so not make full use of my rights in the gospel.

1 Corinthians 12:13

12:13 For in one Spirit we were all baptized into one body. Whether Jews or Greeks or slaves or free, we were all made to drink of the one Spirit.