Proverbs 29:15
"The rod and reproof give wisdom: but a child left to himself bringeth his mother to shame."
Cross References (ranked by relevance)
The proverbs of Solomon. A wise son maketh a glad father: but a foolish son is the heaviness of his mother.
A foolish son is a grief to his father, and bitterness to her that bare him.
Correct thy son, and he shall give thee rest; yea, he shall give delight unto thy soul.
Foolishness is bound in the heart of a child; but the rod of correction shall drive it far from him.
He that spareth his rod hateth his son: but he that loveth him chasteneth him betimes.
Train up a child in the way he should go: and when he is old, he will not depart from it.
He that begetteth a fool doeth it to his sorrow: and the father of a fool hath no joy.
He that gathereth in summer is a wise son: but he that sleepeth in harvest is a son that causeth shame.
And his father had not displeased him at any time in saying, Why hast thou done so? and he also was a very goodly man; and his mother bare him after Absalom.