Dr. Jason BeDuhn studies ancient Christian, Jewish, and Manichaean thinkers, and in this podcast interview, he explores their common "tipping point"—the place where all these religious groups struggled to find answers to explain a perfect God who allowed bad things to happen. All of them did so by blurring the idea of monotheism to some degree. There was some other divine influence, commonly known as a 'demiurge' who became the source of evil in some manner.