The Biblical Meaning of "Holiness" - That Isn't Yours!

I have watched ridiculous ways of explaining why things are right and wrong to small kids --which indicates that most adults have no clue themselves. I've watch the "rational consequences" approach, giving kids long multiple-choice decisions while teasing out each's consequences --while kids stare blankly. I have watched the Golden Role approach -- really?  How about the new trend of Empathy and Restorative Justice? It sounds wonderful, except that it backfires: most kids aren't naturally empathetic, and restorative justice usually just revictimizes the victim. How about we go to the core meaning of "holy" in the Holiness Code of Leviticus: "That doesn't exist for your benefit." (That toy wasn't yours to consider playing with! That yard wasn't yours to go in! That turn wasn't yours to take! etc.)