Servants: Duties of, to Masters: Not to Serve Them with Eye-Service, As Men-Pleasers
Source: TTT
Ephesians 6:6
And do this not only to please them while they are watching, but as servants of Christ, doing the will of God from your heart.
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.