Solomon
Proverbs 29:19ESV·traditional attribution

By mere words a servant is not disciplined, for though he understands, he will not respond.

Matthew Henry Presbyterian @wholebiblehenry

Here is the description of an unprofitable, slothful, wicked servant, a slave that serves not from conscience, or love, but purely from fear. Let those that have such servants put on patience to bear the vexation and not disturb themselves at it. See their character. 1.

John Gill Reformed Baptist @doctorgill

A servant will not be corrected by words,.... Not by them only, especially one that is of a servile, surly, and untractable disposition; otherwise a good servant, and well disposed to his master, and willing to serve him, and promote his interest, a word is sufficient for such an one; when he is bid to go, he goes; or to come, he comes, Mat 8:9...

Jamieson-Fausset-Brown Reformed @jfbcommentary

A servant--who lacks good principle. corrected--or discovered. will not answer--that is, will not obey.