I have not read that. But I’ve never heard a plausible word from Thiering, so I would be skeptical.

I haven’t read that book, only parts of it, so I don’t know what it covers that would overlap. Most of that book is about post-Constantine Christianity and thus wouldn’t be relevant.

I don’t know as to the final cut of the film, but mythicism isn’t the gist of the it as such. It gets a mention I think, but the film is mostly about the most widely agreed findings of mainstream scholarship and public ignorance of it. So it doesn’t push mythicism, rather it presents all the information that can lead one to ask that next question: why, then, are we even confident there was a Jesus? But that’s not its goal. Its goal is to disabuse Christians of their popular myths about the origins of Christianity and the writing of the New Testament. And does so entertainingly. There really isn’t another movie like it. It will be very useful even to hand off to Christian friends and family for a viewing.