I don't know how you came to that conclusion as in the first speech of God there is absolutely no mention of good or evil. It talks extensively about the fact that Job, as a human, is neither the cause of natural forces or the world at large (earth, its weather, cosmos, animals and their behavior, etc.) nor is he the one who controls them or even knows how they work. I think that passage is pretty straightforward.

So by causality I mean the boring and conventional: A is the cause of B which in turn is the cause of C, etc. God simply lays out the evolution of universe and asks Job whether he knows how these causal chains work. That implies that Job, despite his preconceived notions about divine providence (remember, while he rejects the naive interpretations of his friends, he still thinks that his ordeal is unfair), has no idea why things happen as they do. And since Job in still “unenlightened” at this point in the story, he honestly replies that he, indeed, has no clue about the matter.

The second speech that focuses on Behemoth and Leviathan merely reinforces the point of Job having no possibility to control the forces (of God) that are more powerful than him, i.e. the causality that caused him. It's the good ole “honor your mother and father” (or in other words, you can cheat neither your genes nor pretend that your upbringing etc. didn't happen).

Job then finally accepts that and becomes enlightened, and that's all there is to it.