Solomon
Ecclesiastes 10:17ESV·traditional attribution

Happy are you, O land, when your king is the son of the nobility, and your princes feast at the proper time, for strength, and not for drunkenness!

Matthew Henry Presbyterian @wholebiblehenry

Solomon here observes, I. How much the happiness of a land depends upon the character of its rulers; it is well or ill with the people according as the princes are good or bad. 1. The people cannot be happy when their princes are childish and voluptuous (Ecc 10:16): Woe unto thee, O land!

Commenting on Ecclesiastes 10:16-20

John Gill Reformed Baptist @doctorgill

Blessed art thou, O land, when thy king is the son of nobles,.... Or "heroes" (z), called "Hhorim" in the Hebrew, which signifies "white"; either from the white garment they wore, or rather from the purity and ingenuity of their minds and manners; being illustrious persons, not only by birth and education, but in their lives and actions.

Jamieson-Fausset-Brown Reformed @jfbcommentary

son of nobles--not merely in blood, but in virtue, the true nobility (Sol 7:1; Isa 32:5, Isa 32:8). in due season-- (Ecc 3:1), not until duty has first been attended to. for strength--to refresh the body, not for revelry (included in "drunkenness").