This book is an examination of today's Christianity's need for the Mithras Cult for its origins and development. Christianity today developed from the proto-orthodox churches that Saint Paul created. Paul converted Mithras house churches into Jesus House churches. Without a sacred book or sacred rituals to leave with the new Christian church, Paul left the new church with its original Mithras rituals. Paul injected Hebraic ethics and morality to the newly formed churches. Without Paul's method of evangelism the new Christian religion would have died out before the end of the first century CE.