Here is a good example of what history of christianity (or exegesis, or theology) is not or should not be: assertions without foundations, crazy reasoning (especially when it invokes evidence from mental hospitals), use of unexamined textual sources, moronic comparisons (the tomb empty of Jesus = a cave, vs Muhammad’s cave), there is no end to it. The mode of speech reminded me of business advertisement: loud, repetitious, and obnoxious.