Colossians 3:22
3:22 Slaves, obey your earthly masters in every respect, not only when they are watching – like those who are strictly people-pleasers – but with a sincere heart, fearing the Lord.
Colossians 4:1
4:1 Masters, treat your slaves with justice and fairness, because you know that you also have a master in heaven.
Colossians 4:11
4:11 And Jesus who is called Justus also sends greetings. In terms of Jewish converts, these are the only fellow workers for the kingdom of God, and they have been a comfort to me.