So yee WG is a bit of prick here, not only killing babies but also mind controlling the pharaoh in to not agreeing so that he can torture him some more.
I just want to say, this is one area in which the Dresden Files' White God doesn't match up with our world's Christian God. I have a feeling that this section of the Dresden Bible might be different, sort of like how Thomas' "Faith, Hope and Love" quotation was so obviously different (beyond a reasonable allowance for paraphrase). TWG and his followers have outright stated time and time again, and demonstrated time and time again, that their greatest priority is the preservation of freedom of choice.

I'm not arguing Christian morality or theology, I'm using the Bible in the same way that Harry mentioned the story of Persephone to Hades. Besides, that bit about TWG was just a minor point.

At this point, we know the worst that Mab has done, and we know the reasons why. However, as for Nicodemus we know the worst that he's done - which is far worse then Mab - and you only have some guesses as to the reasons why. The only way in which Nicodemus' actions are not seen as an atrocity would be if he is trying to do some amazing fantastic wonderful thing that saves the entire world. And that is just so much hypothesis.

Besides, I think that an intellectual evil and temptation is far more difficult to contract than an emotional one. If a person is being emotionally tempted, they can usually reason and logic their way out of it. But if I'm being tempted using intelligence, logic, reasoning, by a being a million times more intelligent than I am, how would a person counteract that?

Maybe, possibly, it might be easier to walk away from a coin. But I think that the collateral damage would be far greater.