Ephesians 6:5-7
  
6:5 Servants, be obedient to them that are your masters according to the flesh, with fear and trembling, in singleness of your heart, as unto Christ;
6:6 Not with eyeservice, as menpleasers; but as the servants of Christ, doing the will of God from the heart;
6:7 With good will doing service, as to the Lord, and not to men: