The appropriate name of the religion is an acute topic of discussion among believers. Many Rodnovers have adopted terms that are already used to refer to other religions, namely "Vedism", referring to the historical Vedic religion and the ancient Iranian religion, and "Orthodoxy", commonly associated to Orthodox Christianity. For instance, one of the earliest branches of Rodnovery is known as "Peterburgian Vedism". They explain that "Vedism" derives from the word "to know" and implies that rather than dogmatically believing ("verit"), Vedists "know" or "see" ("vedat") spiritual truths. The term was first employed by Yuri P. Mirolyubov—the writer or discoverer of the "Book of Veles"—in the mid-twentieth century, and later adopted by the founder of Peterburgian Vedism, Viktor Bezverkhy.