Pope Leo III, Charlemagne and the Tithe: The Code of Silence by Jonathan Kithcart is a religious and historical study that examines the origins of tithing within the Christian church. Drawing from biblical interpretation, church history, and theological research, the book argues that the enforcement of the tithe became institutionalized following the crowning of Charlemagne by Pope Leo III in 800 A.D. Kithcart challenges traditional teachings on mandatory tithing, comparing later church practices with the beliefs and customs of the early Christian church. Through scriptural references and historical analysis, the book encourages readers to reconsider long-standing doctrines surrounding giving, grace, and Christian practice.