I think this bears repeating:
*** w63 8/15 497 Each One Will Render an Account ***
7 If parents are to render a good account to God for the way they bring up their children, they must apply Jehovah’s discipline in love but with firmness. This calls for a positive discipline, not a lazy kind in which parents bribe their children into good behavior. Firm discipline means that there will be no parental pussyfooting. The child needs to know what his parents stand for and that they cannot be shaken from Jehovah’s principles by any amount of arguing, wheedling or crying. Though firm, Jehovah’s discipline is applied in love, so that it is consistent, reasonable and righteous.......
8 All children of Adam need correction, and at times firm discipline requires the rod, in the administration of pain. “Foolishness is tied up with the heart of a boy; the rod of discipline is what will remove it far from him.” (Prov. 22:15) Jehovah’s discipline is thus not a watered-down discipline such as that advised by some worldly authorities who would always hold back the rod. But the literal rod is what is basically meant at Proverbs 23:13, 14: “Do not hold back discipline from the mere boy. In case you beat him with the rod, he will not die. With the rod you yourself should beat him, that you may deliver his very soul from Sheol itself.” At times, then, a parent will need to speak to the child by the administration of pain. This pain, God’s Word assures us, is not going to kill the child; but it will have beneficial effects, protective benefits for the child, protecting “his very soul from Sheol.”****
So parents are to use a rod and literally beat their children and while they are beating them they are not to worry about them dying from the beating because they most likely will recover. Well that is the kind of advice that fits with the violent nature of Jehovah who kills people for picking up sticks on a sabbath day of mandatory rest.