1 Corinthians 7:21-24

21Were you called while a slave? Don’t let it concern you. But if you can become free, by all means take the opportunity.

22For he who is called by the Lord as a slave is the Lord’s freedman. Likewise he who is called as a free man is Christ’s slave.

23You were bought at a price; do not become slaves of people.

24Brothers and sisters, each person is to remain with God in the situation in which he was called.