Servants: should Serve in the Fear of God
Source: TTT
Ephesians 6:5
Slaves, obey your earthly masters with respect and fear and sincerity of heart, just as you would obey Christ.
Colossians 3:22
Slaves, obey your earthly masters in everything, not only to please them while they are watching, but with sincerity of heart and fear of the Lord.