So if you are one of those people like me that thinks on principle rather than what might be the smartest thing to do for your own benefit, what would you do in this situation?
Hmmm this is tricky as it could potentially affect your grade. However I think something needs to be done if he has gone on from history in to the regions of personal faith. He should be looking at things in historical contexts not in the same light as a Sunday Class. If those sources are not “generally accepted” then he is damaging everyone in your class’s education, especially if they take classes further in those specific areas.
I would either send a letter to the head of the department or who ever is in charge of him detailing your concerns and complaints or go in and speak to them. He is being very unprofessional, as well as a dreadful teacher, especially if he is not even mentioning that some of his sources are controversial.
I would not speak to him about it, if you decide to, be sure to have a witness to ensure that this won’t feck you over.