...that would eventually bring about the formation of a realm of existence based on good and evil... What this means is that good and evil as such were not revealed there immediately but rather, that a certain path unfolded in such a way that eventually, the rule of good and evil emerges. Let me explain this whole matter: We know that there is such a thing as an opposite and something else that is divergent.
What is truly evil is the Other Side and all that results from it, namely every kind of ruin. This is literally the opposite of perfection. On the other hand there is something which diverges from perfection and is incompatible with it but which is not its complete opposite. This applies to all those deficiencies which are not actually evil in themselves but which lead to a steady deterioration until evil emerges. However, as long as we have only a deficiency and not actual evil, we cannot call it the opposite.