Firestone explains the remarkable similarities and profound differences between Judaism and Islam, the complex history of Jihad, the legal and religious positions of Jews in the world of Islam, how various expressions of Islam (Sunni, Shi`a, Sufi, Salafi, etc.) regard Jews, the range of Muslim views about Israel, and much more. He addresses these issues and others with candor and integrity, and he writes with language, symbols, and ideas that make sense to Jews.

Exploring these subjects in today's vexed political climate is a delicate undertaking. Firestone draws on the research and writings of generations of Muslim, Jewish, and other scholars, as well as his own considerable expertise in this field. The book's tone is neither disparaging, apologetic, nor triumphal. Firestone provides many original sources in translation, as well as an appendix of additional key sources in context. Most importantly, this book is readable and reasoned, presenting to readers for the first time the complexity of Islam and its relationship toward Jews and Judaism.