Solomon
Ecclesiastes 7:21BSB·traditional attribution

Do not pay attention to every word that is spoken, or you may hear your servant cursing you.

Matthew Henry Presbyterian @wholebiblehenry

Solomon, in these verses, recommends wisdom to us as the best antidote against those distempers of mind which we are liable to, by reason of the vanity and vexation of spirit that there are in the things of this world. Here are some of the praises and the precepts of wisdom. I. The praises of wisdom.

Commenting on Ecclesiastes 7:11-22

John Gill Reformed Baptist @doctorgill

Also take no heed unto all words that are spoken,.... Seeing so it is, that imperfection attends the best of men, no man is wise at all times, foolish words and unguarded expressions will sometimes drop from him, which it is better to take no notice of; they should not be strictly attended to, and closely examined, since they will not bear it.

Jamieson-Fausset-Brown Reformed @jfbcommentary

As therefore thou being far from perfectly "just" thyself, hast much to be forgiven by God, do not take too strict account, as the self-righteous do (Ecc 7:16; Luk 18:9, Luk 18:11), and thereby shorten their lives (Ecc 7:15-16), of words spoken against thee by others, for example, thy servant: Thou art their "fellow servant" before God (Mat 18:32-35).