Solomon
Proverbs 4:3ESV·traditional attribution

When I was a son with my father, tender, the only one in the sight of my mother,

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. The invitation which Solomon gives to his children to come and receive instruction from him (Pro 4:1, Pro 4:2): Hear, you children, the instruction of a father. That is, 1. "Let my own children, in the first place, receive and give good heed to those instructions which I set down for the use of others also." Note, Magistrates and ministers, who...

Commenting on Proverbs 4:1-13

John Gill Reformed Baptist @doctorgill

For I was my father's son,.... Or, "a son to my father" (p); so Solomon was to God, his heavenly Father, Sa2 7:14; which Jarchi observes, and gives as the sense of this place: but his father David is meant, whose son he was; though he was not his only one, he had others besides him.

Jamieson-Fausset-Brown Reformed @jfbcommentary

father's son--emphatic, a son specially regarded, and so called tender, as an object of special care (compare Ch1 22:7; Ch1 29:1); an idea further expressed by only beloved--or, "as an only son" (Gen 22:2), though he had brothers (see on Ch1 3:5).