One theory is that the Virgin of Guadalupe was presented to the Aztecs as a sort of "Christianized" Tonantzin, necessary for the clergymen to convert the indigenous people to their faith. As Jacques Lafaye wrote in Quetzalcoatl and Guadalupe, "...as the Christians built their first churches with the rubble and the columns of the ancient pagan temples, so they often borrowed pagan customs for their own cult purposes.Lafaye, Jacques. Quetzalcoatl and Guadalupe. The Formation of Mexican National Consciousness. Chicago: University of Chicago Press. 1976
