At the dawn of the twentieth century, while Lima's aristocrats hotly debated the future of a nation filled with Indians, thousands of Aymara and Quechua Indians left the pews of the Catholic Church and were baptized into Seventh-day Adventism. One of the most staggering Christian phenomena of our time, the mass conversion from Catholicism to various forms of Protestantism in Latin America was so successful that Catholic contemporaries became extremely anxious on noticing that parts of the Indigenous population in the Andean plateau had joined a Protestant church. p In iSacrifice and Regenerationi Yael Mabat focuses on the extraordinary success of Seventh-day Adventism in the Andean highlands at the beginning of the twentieth century and sheds light on the historical trajectories of Protestantism in Latin America. By approaching the religious conversion among Indigenous populations in the Andes as a multifaceted and dynamic interaction between converts, missionaries, and their social se