Written from firsthand experience- the author's own encounter with Islam in prison and at the mosque afterward- this book applies the same historical method (asking what problem a revelation solves and whose interests it serves) to Islam that the author's other books apply to the Torah and the Bible. It examines the Quran's relationship to earlier Hebrew scripture, the genealogical shift that elevates Ishmael's line, parallels between Muhammad's and Moses's claims to revelation, and the Persian theological concepts both religions inherited. The book draws a clear line between two separate questions: whether the text's claim to divine origin holds up under scrutiny, and whether the community and discipline built around it are worth respecting, and argues readers deserve the full history behind both.