The Spanish Inquisition developed the heresy known as alumbradismo out of disparate evidence: the heresy existed only in documents by, for, or about the Inquisition. Defendants charged as alumbrados were often acted in ways incommensurate with orthodox Spanish Catholicism; their defining characteristic across time was an emphasis on interior religious experience, especially mental prayer, which would lead toward the abandonment of one’s soul in God. However, the idea that they were members of an organized group—despite lacking any self-formulated doctrine or teachings, much less a means for global communication or dissemination of their ideas—was a stretch of logic that validated inquisitorial persecution but fails to adhere to modern historians’ concepts of proof. It was the Inquisition’s persecutorial discourse and bureaucracy that provided the connective threads for this “sect” when the alumbrados themselves failed to do so.