In focusing on a medieval theological discourse of figural slavery, this book demonstrates the racist force of the construction of inferior identities for Jews, Muslims, and Africans. Although these groups occupy complexly different positions in contemporary Western society, the medieval linkages between them nevertheless help us understand the recent rise in nationalism and white supremacism both in the United States and Europe. White supremacists and the alt-right have expressly drawn on medieval tropes and phrases to fabricate a notion of originary medieval Christian whiteness that they aspire to recreate in the contemporary moment. While no apparent rationale organizes white supremacists’ animus against blacks, Muslims, and Jews, the history of the ideology of white supremacy can be traced back to medieval Western Europe, when the concept of Christian superiority, often coded as white, opposed itself to an imagined infidel inferiority that correlated Jews, Muslims, and Africans.