The "Stanford Encyclopedia of Philosophy" says that even though the basis of Christianity was meant to have been unbreakable, it is already broken. In fact, it has been much more than anyone could ever understand. This also means that without God, morals are not unquestionable or undoubtable anymore. Nietzsche says that when these morals are shown to be false they are also shown to be harmful. Also, trying to remove these harmful morals causes even more harm. This is because people have become dependent on them. He also says that the most harmful parts of morality have taken control of how we understand ourselves. Therefore, we don't know how to live without this harmful morality. Because of this, the death of God leads to many kinds of nihilism. Nietzsche says that Christianity itself is a kind of nihilism.