Ezra and Nehemiah aren't really kids' stories; not with all those lists. But at the same time, there's nothing objectionable about them. Maybe it has "mature themes," but definitely not the sexy kind; more of the "we're trying to organize temple rituals properly" kind. There's no graphic violence, no sexuality, no profanity, no innuendo. Nehemiah beating the daylights out of some guys is as bad as it gets.