Charles Ellicott Commentary 1 Corinthians 7:22

"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." — 1 Corinthians 7:22 (ASV)

For he that is called in the Lord, being a servant, . . .—Better, For he who was converted as a slave is Christ’s freedman; and, similarly, the one who was converted as a freeman is Christ’s slave. Therefore, no one needs to trouble himself about his mere earthly servitude or freedom. If he is a slave, let him be cheered by remembering that he is a freedman belonging to Christ; and if he is a freeman, let him not despise the state of the one in servitude, realizing that he himself is Christ’s slave. A “freedman,” as distinct from a “freeman,” was one who had been in bondage but was now free.