Ephesians 6:5-8
You who are slaves, obey your earthly masters, in reverence and awe, with sincerity of heart, as you would the Christ,
Colossians 3:22-25
You who are slaves must always obey your earthly masters, not with mere external service, as though you had only men to please, but with sincerity of heart, because you fear the Lord.
Titus 2:9-10
Tell slaves always to obey their masters and try to please them, not to oppose them
1 Peter 2:18
You servants must be submissive to your masters and perfectly respectful to them; not only to those who are kind and considerate, but also to those who are unreasonable.