The Evangelical Philosophical Society’s periodical Philosophia Christi has a set of articles dealing with difficult ethical issues in the Old Testament like the slaughter of the Canaanites, the sacrifice of Isaac, etc.

I believe this started with Paul Copan’s paper Is Yahweh a Moral Monster?, which is in response to several different arguments presented by the “new athiests.” You can find some other articles here, but you’ll have to subscribe to get the ones from the current volume. Here are some snapshots of the different articles.

Also there will be a conference, My Ways are not Your Ways: The Character of the God of the Hebrew Bible at Notre Dame in September.