Ephesians 6:5-8

5Bondservants, obey your earthly masters with fear and trembling, with a sincere heart, as you would Christ,

6not by the way of eye-service, as people-pleasers, but as bondservants of Christ, doing the will of God from the heart,

7rendering service with a good will as to the Lord and not to man,

8knowing that whatever good anyone does, this he will receive back from the Lord, whether he is a bondservant or is free.