It might be worthwhile to reiterate the fact that parental discipline should never injure the child. It is never necessary to bruise your children in order to spank them hard enough to make your point. Spanking should always be administered with love and never when the parent is in a fit of rage. That sort of discipline is indeed abusive, wrong, and detrimental to the child, because it shatters the environment of loving nurture and instruction Ephesians 6:4 describes.