The definition of Natural Law which is also known as the Law of Right and Wrong and the Moral Law is a body of unchanging moral principles regarded as a basis for all human conduct. As determined by nature, the law of nature is implied to be objective and universal; it exists independently of human understanding and is very much a foundation of all religions.I'm not sure I'd consider them religious or spiritual concepts, they are cultural. It's been awhile since my kids were 3 but I think they understood right and wrong at the most basic level, e.g., don't stick your finger in an outlet..You mean like right and wrong?I don't know any 3 year olds that understand any religious or spiritual concepts.