The Apostle Paul
Ephesians 6:6BSB·traditional attribution

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.

Matthew Henry Presbyterian @wholebiblehenry

Here we have further directions concerning relative duties, in which the apostle is very particular. I. The duty of children to their parents. Come, you children, hearken to me, I will teach you the fear of the Lord. The great duty of children is to obey their parents (Eph 6:1), parents being the instruments of their being, God and nature having given them an authority...

Commenting on Ephesians 6:1-9

John Gill Reformed Baptist @doctorgill

Not with eyeservice, as menpleasers,.... Doing nothing but when under the master's eye, and then pretending a great deal of diligence and industry, in order to ingratiate themselves into his affections, and neglecting his business when he is absent; whereas they ought to attend his service in his absence, as well as in his presence, and so seek to please him, which is commendable.

Albert Barnes Presbyterian @notesbybarnes

Verse 6. Not with eyeservice. That is, not with service rendered only under the eye of the master, or when his eye is fixed on you. The apostle has here adverted to one of the evils of involuntary servitude as it exists everywhere. It is, that the slave will usually obey only when the eye of the master is upon him.