The book is a monographic study by T., one of the ideologists of the Renovationist movement in Russia. It is one of the first attempts in post-revolutionary Russia to study the activities of Russian Orthodox Church and its strong connection with the monarchy. The research of the Church-State relations in Russia undertaken by the author covers the entire history of Russia from tranlation of the “Byzantine idea of Tsarist absolutism to the Russian soil through the Church” up to the “near-death period of Tsarism” between 1905 and February 1917. Setting the question of what supported the “alliance of Orthodoxy with autocracy”, the author finds the following answer: “The union of the Church with Tsarism has always rested on the consideration that the existence of royal power is beneficial for the existence of the Church... On the contrary, the hierarchy knew well that Tsarism would always be a faithful support for the Church, because the support of religion would be in its interests. Such awareness of mutual benefits supported the alliance until the end...”.