True service and good will come from the heart

Ephesians 6:5-7

Servants, be obedient to those who according to the flesh are your masters, with fear and trembling, in singleness of your heart, as to Christ, not in the way of service only when eyes are on you, as men pleasers, but as servants of Christ, doing the will of God from the heart, with good will doing service as to the Lord, and not to men.