Solomon
Proverbs 30:23ESV·traditional attribution

an unloved woman when she gets a husband, and a maidservant when she displaces her mistress.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. An account of four things that are unsearchable, too wonderful to be fully known. And here, 1. The first three are natural things, and are only designed as comparisons for the illustration of the last. We cannot trace, (1.) An eagle in the air.

Commenting on Proverbs 30:18-23

John Gill Reformed Baptist @doctorgill

For an odious woman, when she is married,.... Odious for her person, her ugliness, and the deformity of her body; or rather for the ill qualities of her mind, which, while single, she endeavours to conceal, but, being married, hides them no longer; but becomes imperious, proud, scornful, and malicious, and behaves in an ill natured way to her husband and all about her, to...

Jamieson-Fausset-Brown Reformed @jfbcommentary

heir . . . mistress--that is, takes her place as a wife (Gen 16:4).