1 Corinthians 7:21-24

Wast thou called being a bondservant? care not for it: nay, even if thou canst become free, use it rather. For he that was called in the Lord being a bondservant, is the Lord’s freedman: likewise he that was called being free, is Christ’s bondservant. Ye were bought with a price; become not bondservants of men. Brethren, let each man, wherein he was called, therein abide with God.