PRO 22:6, 15 ESV
Train up a child in the way he should go; even when he is old he will not depart from it.
Folly is bound up in the heart of a child, but the rod of discipline drives it far from him.
PRO 23:13-16, 19, 26 ESV
Do not withhold discipline from a child; if you strike him with a rod, he will not die.
If you strike him with the rod, you will save his soul from Sheol.
My son, if your heart is wise, my heart too will be glad.
My inmost being will exult when your lips speak what is right. Hear, my son, and be wise, and direct your heart in the way.
My son, give me your heart, and let your eyes observe my ways.