This publication provides a commented publication of the Power Book of the Tsar's genealogy according to the six oldest lists of the 16th - early 17th centuries (including the oldest Tomsk and Volkovsky 1560s, discovered today by Novosibirsk and St. Petersburg archaeographers). This monument is the first attempt to create a consolidated non-written work on Russian history of the 9th-16th centuries, written from the historiosophical positions of the Russian Orthodox Church and reflecting the concepts of its then leaders - Metropolitans Macarius and Athanasius. Strengthening the unity of the country, understood as the unity of the family of autocrats of the Rurikovich, acting in alliance with the Church, the creators of the Power Book included in it a significant number of historical, literary and hagiographic texts of many Russian lands.