This verse continues the parent-child joy theme from verses 15-16. A righteous and wise child is a source of the deepest parental joy. This frames the whole chapter's appeal: the father is not commanding out of power but appealing out of love, longing to rejoice over the child's flourishing.
Memory phrase: Wise children bring great joy.
Talk about it: What is the best gift you can give your parents — not bought, but lived?
Prayer: God, help me be a child who brings joy to my family.