Charles Ellicott Commentary Proverbs 31:2

"What, my son? and what, O son of my womb? And what, O son of my vows?" — Proverbs 31:2 (ASV)

What, my son?— that is, what shall I say? The question, thrice repeated, shows her extreme anxiety to give good advice to this son, who was tender, and only beloved in the sight of his mother.

The son of my vows. —Perhaps given, like Samuel, in answer to her prayers and vows.