Proverbs 22:15
Foolishness is bound in the heart of a child; but the rod of correction shall drive it far from him.
Proverbs 23:13
Withhold not correction from the child: for if thou beatest him with the rod, he shall not die.
Proverbs 29:15
The rod and reproof give wisdom: but a child left to himself bringeth his mother to shame.